sentiotect WC4-B-D/W/S Electric combi sauna heater control Instruction Manual

Sauna controller
wave.com4 11 kW
INSTRUCTIONS FOR INSTALLATION AND USE

WC4-B-D
wave.com 4 control unit, black| 1-010-433 / WC4-B-S
wave.com 4 control unit, white| 1-010-433 / WC4-B-W

About this instruction manual

Read these installation and operating instructions carefully and keep them within reach of the sauna controller. This ensures that you can refer to information on safety and operation at any time.
These installation and operating instructions can also be found in the downloads section of our website: www.sentiotec.com/downloads.
Symbols used for warning notices
In these instructions for installation and use, a warning notice located next to an activity indicates that this activity poses a risk. Always observe the warning notices. This prevents damage to property and injuries, which in the worst case may be fatal.
The warning notices contain keywords, which have the following meanings:
DANGER!
Serious or fatal injury will occur if this warning notice is not observed.
WARNING!
Serious or fatal injury can occur if this warning notice is not observed.
CAUTION!
Minor injuries can occur if this warning notice is not observed.
ATTENTION!
This keyword is a warning that damage to property can occur.
Other symbols
This symbol indicates tips and useful information.

Important information for your safety

The wave.com4 11 kW sauna controller has been manufactured according to the applicable safety regulations. However, hazards may arise during use. You should therefore adhere to the following safety information and the specific warnings in the installation and operating instructions. Also observe the safety information for the devices connected.
2.1. Intended use
The wave.com4 11 kW sauna controller is designed solely for operating and controlling the functions described in the technical data. The sauna controller may only be used for operating and controlling three heating circuits with a maximum output of 3.7 kW per heating circuit. When using the optional wave.com4 expansion board (WC4-H-PCB), the maximum evaporator output is 3.0 kW. According to EN 60335-2-53 sauna remote control units may only be used to regulate and control a sauna heater that passes the cover test according to paragraph 19.101. Alternatively, an appropriate safety measure (e.g.: safety shutdown, door contact…) must be installed. Any use exceeding this scope is considered improper use. Improper use can result in damage to the product, severe injuries or death. The warranty is void if the device is not used as intended.
2.2. Safety information for the installer

• The electrical connection may only be performed by a qualified electrician or similarly qualified person. Please note that in the event of a guarantee claim, a copy of the invoice issued by the electrician performing the work must be presented.
• Work on the sauna controller may only be performed when the power has been disconnected.
• A fully disconnecting all-pole isolating device compliant with overvoltage category III must be fitted on site.
• The power unit of the wave.com4 11 kW (WC4-B-11) must be installed in accordance with the technical data.
• The control unit can be installed inside or outside the sauna, however it must be mounted according to the installation and operating manual provided.
• Also comply with the regulations applicable at the installation location.
• For your own safety, consult your supplier in the event of problems that are not explained in sufficient detail in the installation instructions.

2.3. Safety information for the user

• The sauna controller must not be used by children under 8 years of age.

• The sauna controller may be used by children over 8 years of age, by persons with limited psychological, sensory or mental capabilities or by persons with lack of experience/knowledge, but only if:
  – They are supervised.
  – They have been shown how to use the device safely and are aware of the hazards that could occur.

• Children must not play with the sauna controller.

• Children under 14 years of age may only clean the sauna controller if they are supervised.

• For health reasons, do not use the sauna when under the influence of alcohol, medication or drugs.

• Make sure that no flammable objects have been placed on the sauna heater before the sauna controller is switched on.

• Make sure that no flammable objects have been placed on the sauna heater before activating the preset time function or the standby mode for remote start.

• For your own safety, consult your supplier in the event of problems that are not described in sufficient detail in the user instructions.

Product description

The wave.com4 11 kW is a two-piece sauna controller. In order to function, a basicmodule with power unit (WC4-B-11), a control unit (WC4-B-S, WC4-B-D or WC4B-W) and a heater sensor (WC4-B-F1D or WC4-B-F1H) are always required.
3.1. Scope of delivery

• Power unit (1-049-633 / WC4-B-11)
• Installation and operation manual

3.2. Not supplied

• Main switch (standard 230 V switch)
• Light switch (standard 230 V switch)
• Dark wood control unit (1-008-128 / WC4-B-D) or black control unit (1-010-389 / WC4-B-S) or white control unit (1-010-437 / WC4-B-W)
• Light wood heater sensor (1-013-651 / WC4-B-F1H), 5 m sensor cables or dark wood heater sensor (1-003-479 / WC4-B-F1D), 5 m sensor cables

3.3. Optional accessories

• Expansion board for humidity, bench sensor (1-003-472 / WC4-H-PCB)
• Dark wood WC4 bench sensor (1-003-295/WC4-H-F2D), 5 m sensor cables
• Light wood WC4 bench sensor (1-013-662/WC4-H-F2H), 5 m sensor cables
• Dark wood humidity sensor (1-003-364 / WC4-H-HD), 5 m sensor cables
• Light wood humidity sensor (1-013-669 / WC4-H-HH), 5 m sensor cables
• Humidity/temperature sensor (1-010-081/O-FTS2), 6 m sensor cables
• Dark wood sensor housing for FTS2 (1-041-521 / SC-FTS2-D)
• Light wood sensor housing for FTS2 (1-041-520 / SC-FTS2-D)
• Y-adapter RJ10 4-pin (1-028-167 / WC4-C-ADY)
• Power booster (1-008-779 / O-S2-18, 1-009-280 / O-S2-30)
• Safety shutdown (SFE-xxxxx)
• Remote start system (1-051-003 / FS-SY)
• Door sensor system (1-052-722 / SAB00102)

3.4. Product features
The wave.com4 11 kW sauna controller features the following functions:

• Regulation of sauna heaters with a heating output of up to 11 kW.
• When an expansion board is installed, regulation of combined heaters with a heating output of up to 11 kW and evaporator output of up to 3 kW.
• When a power booster is installed, the maximum power rating of 11 kW can be increased.
• Option to connect external main switch
• Option to connect external light switch
• Switching and dimming a cabin light (up to 100 W bulb)
• Fan regulation (up to 100 W)
• Automatic heating time limit The sauna controller shuts down automatically for safety reasons after the maximum heating time (1 to 12 hours).
• Preset time function (1 to 24 hours)
• Acoustic signal for time interval (e.g: time to pour water on stones)
• Post-drying program After operation in combined mode, the post-drying program starts automatically to prevent mould or rot from forming in the sauna cabin. (3 setting options).
• Remote start function
• Eco mode Eco mode ensures that the cabin temperature is the same after a break (20, 40, 60 minutes).
• Overheat cut-out The overheat cut-out is installed in the housing for the heater sensor. If a defect causes the sauna heater to continue heating after reaching the preferred temperature, the overheat cut-out switches the  sauna heater off  at a temperature of around 139 °C.

3.5. Sauna operating modes
Sauna mode
Dry heat is provided in sauna mode. The temperature in the cabin is high (80 to 100 °C). The humidity is low (no more than 10%).
Combined mode (optional – with expansion board)
In combined mode, the evaporator operates along with the heater. The temperature in the sauna cabin is lower (around 40 to 65 °C) than in sauna mode, but the relative humidity is much higher, ranging from 35% to 70%. The maximum humidity that can be set
depends on the temperature of the sauna. The higher the sauna temperature, the lower the maximum humidity level that can be set(see Fig. 1).
3.6. Sensor operating modes
The wave.com4 11 kW sauna controller can be operated with one, two or three sensors.
Single sensor mode (F1)
Single sensor mode is the factory setting.
In single sensor mode, the sauna controller is operated with the heater sensor with overheat cut-out only.
The sauna controller displays the actual temperature by default. The targettemperature is displayed while the setting is entered.
In single sensor mode, the maximum humidity that can be set (optional – withexpansion board) is based on the temperature above the heater and the humidityis timed. Only the setpoint for the humidity (in % relative humidity) is shown on the sauna controller display. The actual humidity in the sauna cabin when thehumidity is timed depends on the size of the cabin and the evaporator output, and may differ from the setpoint.

Two-sensor mode with humidity/temperature sensor (FTS2) (optional – with expansion board)
In two-sensor mode with humidity/temperature sensor, the sauna controller displays the temperature measured by the humidity/temperature sensor as the actual temperature.
In two-sensor mode with humidity/temperature sensor, the evaporator is regulated according to the humidity level measured in the cabin.
The sauna controller displays the actual humidity (in % relative humidity) in the sauna cabin.
Two-sensor mode with bench sensor (F2) (optional – with expansion board)
In two-sensor mode with bench sensor, a second temperature sensor (bench sensor) is installed above the rear sauna bench. The sauna controller displays the temperature measured by the bench sensor as the actual temperature.
In two-sensor mode with bench sensor, the humidity is timed. Only the setpoint for the humidity (in % relative humidity) is shown on the sauna controller display.
The actual humidity in the sauna cabin when the humidity is timed depends on the size of the cabin and the evaporator output, and may differ from the setpoint. Two-sensor mode with humidity sensor (WC4-H-H) (optional – with expansion board)
In two-sensor mode with humidity sensor, the sauna controller displays the temperature measured by the heater sensor as the actual temperature.
The evaporator is regulated according to the humidity measured in the cabin. The sauna controller displays the actual humidity (in % relative humidity) in the sauna cabin.
Three-sensor mode with bench sensor (F2) and humidity sensor (WC4-H-Hx) (optional – with expansion board)
In three-sensor mode with bench sensor and humidity sensor, the sauna controller displays the temperature measured by the bench sensor as the actual temperature.
In three-sensor mode, the evaporator is regulated according to the humidity measured in the cabin. The sauna controller displays the actual humidity (in % relative humidity) in the sauna cabin.

Installation

During installation observe the technical data; see Page 37:
ATTENTION!
Interference can impair signal transmission

• Route all sensor cables separately from other mains cables and control cables.

• Protect cables with only one layer of insulation by using a conduit (double insulation).
  The sensors may only be connected using the sensor cables supplied with the unit, which are heat-resistant up to 150 °C.

• The heater sensor cables may NOT be longer than 10 m.

• Outside the cabin, the sensor cables can be extended using cables that are not temperature-resistant.

4.1. Installing the power unit
See Fig. 2 on Page 14.
ATTENTION!
Damage to the unit
The sauna controller is resistant to splashing water, but direct contact with water could still damage it.

• Install the sauna controller in a dry place where the maximum humidity will not exceed 95%.
• When installed in the sauna cabin, the cable bushings must not point upwards!

To install the power unit 1, carry out the following steps:

1. Take off the cover of the power unit.
2. You can fasten the power unit to the supporting surface at the 4 corners of the chassis (see arrows Fig. 4 on page 17)

4.2. Installing the main switch
Follow the operating instructions for the switch.
4.3. Installing the cabin light and the light switch
Follow the operating instructions for the switch.
4.4. Installing the expansion board (optional)

1. Connect the expansion board to the base board using the pre-configured cables (L-N-PE) and the ribbon cable.
2. Fasten the expansion board in place using the screws provided.

4.5. Installing the control unit
Install the control unit 2 on the cabin wall no more than 10 metres from the powerunit 1. Pay attention to how the data cable is routed.
ATTENTION!
Damage to the unit

• The control unit 2 for the sauna controller is splash-proof (IP code IPX4).
• Only use a manual screwdriver for installation. Using a cordless screwdriver may irreparably damage the housing.
• For installation inside the sauna cabin, maintain a distance of at least 30 cm to the ceiling.
  1. Cut the recess for the control unit, for example using a Ø 70 × 35 mm hole cutter.
  2. Connect the 4-pin plug to the RJ10 socket on the control unit.
  3. Screw the housing to the cabin wall by screwing the 4 wood screws supplied through the hole.

4.6. Installing the heater sensor F1 with overheat cut-out
Note the following points when installing the heater sensor:

• The heater sensor must be installed in the sauna cabin above the middle of the sauna heater. For cabins up to 2 × 2 m a distance of 19 cm from the cabin wall must be maintained, for larger cabins a distance of 35 cm.
• The heater sensor must be installed in such a way that it is not affected by inflowing air.
  Take care not to damage any of the sensor cables when pulling them in.

To install the heater sensor, carry out the following steps (see Fig. 3):

1. Drill through the cabin ceiling with an 8 mm bit.
2. Pull the two 2-core heater sensor cable through the hole.
3. Fasten the sensor housing using the wood screws supplied.
4. Guide the two 2-core heater sensor cables up to the power unit and fix the heater sensor cables with cable clamps.
5. Check that the heater sensor is firmly fastened.

4.7. Installing the humidity/temperature sensor FTS2 (optional)
The humidity/temperature sensor must be installed on the wall of the cabin above the rear bench seat. A distance of about 15 cm from the ceiling of the cabin must be maintained. Follow the installation instructions for the sensor.
A wooden housing is optionally available for the humidity/temperature sensor.

4.8. Installing the bench sensor F2 (optional)
The bench sensor must be installed on the wall of the cabin above the rear bench seat. A distance of about 15 cm from the ceiling of the cabin must be maintained.
To install the bench sensor, carry out the following steps:

1. Drill through the cabin wall with an 8 mm drill bit.
2. Pull the 2-core bench sensor cable through the hole.
3. Fasten the sensor housing using the wood screws supplied.
4. Guide the 2-core bench sensor cable up to the power unit and fasten it with cable clips.
5. Check that the bench sensor is firmly fastened.

4.9. Installing the humidity sensor WC4-H-H (optional)
The humidity sensor must be installed in the middle of the side wall furthest from the heater at a height of around 150 cm (Fig. 3 on page 15).
To install the humidity sensor, carry out the following steps:

1. Drill through the cabin wall with an 8 mm drill bit.
2. Pull the 3-core humidity sensor cable through the hole.
3. Fasten the sensor housing using the wood screws supplied.
4. Guide the 3-core humidity sensor cable up to the power unit and fasten it with cable clips.
5. Check that the humidity sensor is firmly fastened.

Electrical connection

1 230 V / 400 V connection areas
2 Terminal strip for power supply cable
3 Earth rail
4 Bushing for power supply cable
5 Bushing for heater cable
6 Terminal strip for heater cable
7 Bushing for light and power booster
8 Terminal strip for light
9 Terminal strip for light switch
10Bushing for light switch and main switch
11 Terminal strip for main switch| 12 RJ10 socket for control unit data cable
13 Terminal strip for remote strip
14 Bushing for RJ10 data cable, F1/F2 sensors and remote start device
15Terminal strip for F1 sensor
16 Bushing for WC4-H-H / FTS2 sensor
17 Terminal strip for F2 / WC4-H-H / FTS2 sensor
18Bushing for fan cable
19 Low voltage connection area
20Bushing for evaporator cable
21 Terminal strip for evaporator cable and fan
---|---

Note “5. Electrical connection” on page 17 and “7.1. Connection diagram of basic module” on page 23 and “7.2. Connection diagram for the expansion board (optional)” on page 24.

5.1. Connecting the power supply cable and heater

1. Guide the power supply and heater cable through the bushings 4 and 5 into the 230 V/400 V connection area 1.
2. Connect the cables to the corresponding terminal strips 2 and 6.
   Follow the operating instructions for each device.

5.2. Connecting the evaporator (optional)

1. Guide the evaporator cable (optional with expansion board) through the bushing k into the 230 V/400 V connection area 1.
2. Connect the cables to the corresponding terminal strips l. Follow the operating instructions for the evaporator.

**** If the evaporator does not have an automatic low-water indicator, use a jumper to connect terminal “U1” to terminal “WM” or change the setting of the acoustic signal (see Page 32).

5.3. Connecting the control unit

1. Guide the control unit connection cable through the bushing e into the low-voltage connection area j.
2. Connect the plug of the RJ-10 cable to the connection socket c.
   **** The wave.com4 11 kW sauna controllers allow up to 4 control units to be operated on one power unit. Use the Y-adapter (see “3.3. Optional accessories” on page 9) to connect the optional control units.

5.4. Connecting an external main switch
**** The main switch is not included on delivery.

1. Guide the main switch connection cable through the bushing a into the 230 V/400 V connection area 1.
2. Connect the cable to terminal strip b. Follow the operating instructions for the switch.
   **** The contacts are bridged on delivery. Remove the wire jumper for installation

5.5. Connecting the light

1. Guide the light cable through the bushing 7 into the 230 V/400 V connection area 1.
2. Connect the light cable to terminal strip 8. Follow the operating instructions for the switch.

5.6. Connecting an external light switch
The light switch is not included on delivery.

1. Guide the light switch connection cable through the bushing a into the 230 V/400 V connection area 1.
2. Connect the cable to terminal strip 9. Follow the operating instructions for the switch

5.7. Connecting a fan (optional)

1. Guide the fan cable through the bushing i into the 230 V/400 V connection area 1.
2. Connect the fan cable to terminal strip l. Follow the operating instructions for the fan.

5.8. Connecting the heater sensor F1

1. Guide the heater sensor cables through the bushing e into the low-voltage connection area j.
2. Connect the red heater sensor wires (STB) to the terminals labelled “R-R” in terminal strip f.
3. Connect the white heater sensor wires (F1) to the terminals labelled “W-W” in terminal strip f.

For timed humidity in single-sensor mode, the dummy sensor must be installed (see 5.12 on page 21).

5.9. Connecting the humidity/temperature sensor FTS2 (optional)

1. Guide the sensor cables through the bushing g into the low-voltage connection area j.

2. Connect the temperature sensor wires to the terminals labelled “FTS2: sw-br” in terminal strip h.
   a. Connect the black wire to the terminal labelled “sw”.
   b. Connect the brown wire to the terminal labelled “br”.

3. Connect the humidity sensor wires to the terminals labelled “FTS2: gn-or-rt” in terminal strip h.
   c. Connect the green wire to the terminal labelled “gn”.
   d. Connect the orange wire to the terminal labelled “or”.
   e. Connect the red wire to the terminal labelled “rt”.

5.10. Connecting the bench sensor F2 (optional)

1. Guide the bench sensor cables through the bushing e into the low-voltage connection area j.
2. Connect the bench sensor wires to the terminals labelled “F2: ws-ws” in terminal strip h.
   For timed humidity in two-sensor mode (F1 and F2), the dummy sensor must be installed (see 5.12 on page 21)

5.11. Connecting the humidity sensor WC4-H-H (optional)

1. Guide the sensor cables through the bushing g into the low-voltage connection area j.

2. Connect the humidity sensor wires to the terminals labelled “WC4-H-H: br-bl-gn/ge” in terminal strip h.
   a. Connect the brown wire to the terminal labelled “br”.
   b. Connect the blue wire to the terminal labelled “bl”.
   c. Connect the yellow and green wire to the terminal labelled “gn/ge”.

3. Remove the FTS2 jumper (see “7.1. Connection diagram of basic module” on page 23)

Humidity mode with the humidity sensor WC4-H-H can also be used without the bench sensor F2.

5.12. Connecting a dummy sensor (optional)

1. Connect the dummy sensor supplied to the terminals labelled “WC4-H-H: br-bl” in terminal strip h.

5.13. Connecting a power booster (optional)

1. Guide the power booster cable through the bushing 7 into the 230 V/400 V connection area 1.
2. Connect the power booster cable to terminal strip 2 and 3. Use the ter- minal labelled “ST1” for the safety circuit (ST1) and the terminal labelled “V” for the control circuit (ST2). Follow the operating instructions for each device.
   On delivery, a plastic screw is clamped in terminal ST1 – this may have to be removed.

5.14. Connecting a remote start device
The “Remote start” terminals in the low-voltage connection area 19 are used for the connection.
The outgoing +12“V“DC must be fed back to the terminal via a switch (permanent contact). The last operating mode used can be activated.
5.15. Finishing the installation

1. Connect the earth conductors of the power supply cable and all devices to the earth rail 3.
2. Close the power unit.

Testing

The following tests must be performed by a qualified electrician.
WARNING!
The following tests must be carried out with the power supply switched on. There is a danger of electric shock.

• NEVER touch live parts.

1. Check the contact of the earth conductors on the earth conductor terminal.

2. Check the overheat cut-out on the heater sensor F1.
   a. Switch on the sauna controller.
   b. Open the heater sensor and disconnect one of the two red heater sensor wires.
   ► The display shows “-30” and all the symbols flash.
   ► The controller switches off the heater.
   c. Switch off the sauna controller using the main switch.
   d. Reconnect the red heater sensor wire.
   e. Now disconnect one of the white heater sensor wires.
   f. Switch on the sauna controller.
   ► The display shows “-21” and all the symbols flash.
   ► The controller switches off the heater.
   g. Switch off the sauna controller using the main switch.
   h. Reconnect the white heater sensor wire.

3. Test the phase connection of L1, L2, L3 to U, V, W.

4. Check the maximum permissible heating output of 3.7 kW per phase.

5. Optional – with expansion board: Test the phase connection for evaporator mode L1, L2, L3 to U, V1, W.

6. If there is an optional power booster: Test the control cables ST1, ST2 and ST3.

Connection diagram

7.1. Connection diagram of basic module

Heater [kW]| Power supply cable Heater supply cable (temperature-resistant up to 150 °C)| Fuse  [A]
---|---|---
0 – 6,9| 5 x 1,5 mm²|  3 x 10
< 6,9 – 11| 5 x 2,5 mm²| 3 x 16
1 RJ10 connection for control unit
2 Expansion board
3 Jumper for FTS2
4 Remote start device
5  Heater sensor with overheat cut-out (F1)
6 Expansion board
7 Earth rail
8  Power supply for the sauna controller| 9 Heating system (max.11 kW)
10 Power booster
11 Light
12 Light switch
12 Main switch
13 Evaporator (max. 3 kW)
14Fan
15 Bench sensor (F2 / FTS2)
16 Humidity sensor (WC4-H-H / FTS2)
---|---

7.2. Connection diagram for the expansion board (optional)

Operating and display unit

Operation

Observe “8. Operating and display unit” on page 25.
9.1. Switching on
Switch on the controller by switching on the external main switch (optional).
► The standby indicator lamp 8 lights up and remains lit.
9.2. Setting the heating time
The heating time can be set in hours (1 to 12).
The controller must be set to standby mode when this is programmed.
Press the On/Off 4 and Minus 5 buttons simultaneously for 3 seconds.
► The time that was most recently set flashes in the display 1.
Select the preferred heating time using the Minus 5 and Plus 6 buttons (OFF, 1–12).
Press the On/Off button 4 to confirm your selection and go directly to the language settings (see Page 26). Press the On/Off button 4 to confirm.
► The standby indicator lamp 8 lights up.
9.3. Setting the language
The following languages are available:
English, German, French, Italian, Dutch
The controller must be set to standby mode when this is programmed.
Press the On/Off 4 and Minus 5 buttons simultaneously for 3 seconds.
This takes you to the heating time menu. Press the Mode button 7 to open the language menu. Make your selection here using the Minus 5 and Plus 6 buttons.
Confirm your selection using the Mode button 7.
9.4. Switching on the light (cleaning light)
The light (cleaning light) in the sauna cabin can be switched on and off using an external light switch in any operating mode.
The light (cleaning light) in the sauna cabin can be switched on and off by pressing the On/Off button 4 on the control unit. (The controller must be set to standby mode for this). The light switches off automatically after 5 minutes.
► The standby indicator lamp 8 flashes = standby mode The light in the sauna cabin can be dimmed. To do this, the controller must be set to FIN or HUM mode (see “9.12. Dimming the light” on page 29).
9.5. Selecting the operating mode
The following operating modes are available for selection:

• Sauna mode “FIN” (default)
• Combined mode “HUM”
• Cleaning light “OFF” Press the On/Off button 4 and select the operating mode using the Minus 5 and Plus 6 buttons.

9.6. Starting FIN sauna mode
Select FIN mode. Then briefly press the On/Off button 4.
► The controller starts with the settings that were most recently used for this operating mode.
► The standby 8 and temperature 9 indicator lamps light up.
Select the preferred temperature using the Minus 5 and Plus 6 buttons (< 110 °C)
► The display 1 shows the selected temperature (setpoint) for a few seconds, after which the measured temperature (actual value) is displayed.
9.7. Switching off FIN sauna mode
Briefly press the On/Off button 4.
► The sauna heater switches off.
► The standby indicator lamp 8 flashes. The operating mode is now OFF
► The light (cleaning light) is on.
To switch off the controller, briefly press the On/Off button 4.
► The standby indicator lamp 8 flashes = standby mode
9.8. Starting combined HUM mode
Select HUM mode. Briefly press the On/Off button 4.
► The controller starts with the settings that were most recently used for this operating mode.
► The standby 8 and temperature 9 indicator lamps light up.
Select the preferred temperature using the Minus 5 and Plus 6 buttons.
► The display 1 shows the selected temperature (setpoint) for a few seconds, after which the measured temperature (actual value) is displayed.
Press the Mode button 7 until the humidity indicator lamp 3 lights up.
Select the preferred humidity using the Minus 5 and Plus 6 buttons (< 70 °C see “Fig. 1: Characteristic curve showing humidity relative to temperature” on page 11)
► The display 1 shows the selected humidity (setpoint).
If a humidity sensor (optional) is installed, the measured humidity (actual value) is displayed after a few seconds.
9.9. Switching off combined HUM mode
Briefly press the On/Off button 4.
► The sauna heater and the evaporator are switched off.
► The standby indicator lamp 8 flashes. The operating mode is now OFF
► The light (cleaning light) is on.
To switch off the controller, briefly press the On/Off button 4.
► The standby indicator lamp 8 flashes = standby mode
9.10. Stopping the post-drying programme
After combined mode, the post-drying programme is started automatically.
The display 1 shows the message “dry” and the humidity indicator lamp flashes. For the settings possible for the post-drying programme, see “Setting the post-drying programme” on page 33
► Press the On/Off 4 and Minus 5 buttons simultaneously for around 3 seconds.
To prevent mould and rot from forming, the post-drying programme should NOT be stopped.

9.11. Setting the timer
The timer can be set in minutes (0 to 99). An acoustic signal (buzzer in the power unit) sounds after the time has elapsed.
Press the Mode button 7 until the timer indicator lamp a lights up. Select the preferred interval using the Minus 5 and Plus 6 buttons.
► The display 1 shows the remaining time.
9.12. Dimming the light
The light in the sauna cabin can be dimmed. To do this, the controller must be set to FIN or HUM mode.
Press the Mode button 7 until the light indicator lamp 2 lights up.
► Select the preferred brightness of the cabin light by pressing and holding the Minus 5 or Plus 6 buttons.
► If you briefly press the Plus button 6, the cabin light switches to maximum (100).
► If you briefly press the Minus button 5, the cabin light switches off (0).
If the external light switch is switched on, the cabin light remains at full brightness. If you wish to dim the light using the control unit, the external light switch must be in the OFF position.
9.13. Setting the preset time
The preset time can be set in hours (1 to 24).
The controller must be set to standby mode for this.
Press the On/Off 4 and Plus 6 buttons simultaneously for 3 seconds.
► The time that was most recently set flashes in the display 1.
Select the preferred preset time using the Minus 5 and Plus 6 buttons (OFF, 1–24).
Press the Mode button 7 to switch to FIN or HUM mode and press the On/Off button 4 to confirm.
► The display 1 shows the selected preset time.
► The standby 8 and timer a indicator lamps light up.
After the time has elapsed, the selected operating mode starts.
After a power failure or if the sauna is switched on manually, the preset time is deactivated
9.14. ECO mode
ECO Mode ensures that the cabin temperature is the same when you come back after a break. The following modes are available:

• ECO20 for a 20 minute sauna break
• ECO40 for a 40 minute sauna break
• ECO60 for a 60 minute sauna break

The controller must be set to HUM mode for this.
Press the Mode button 7 until the temperature indicator lamp 9 lights up.
► The display 1 shows the selected temperature.
► The standby 8 and temperature 9 indicator lamps light up.
Press the Plus 6 and Minus 5 buttons simultaneously for 3 seconds.
Use the Minus 5 and Plus 6 buttons to select the preferred ECO mode (OFF, E20, E40, E60).
Press the Mode button 7 to confirm the selection and start the break.
9.15. Activating standby for remote operation
EN 60335-2-53 specifies that sauna control units with a remote start function must be set manually to “Standby for remote operation” mode. This activation must take place again after each remote start and stop procedure. Perform the following steps:
Make sure that the sauna control unit is in standby mode.
Press the On/Off button 4 and the Mode button 7 simultaneously for around 3 seconds.
► “rc” (remote control) flashes in the display 1.
► The sauna control unit is then ready to be started and stopped using a remote start signal.
► After a remote start and stop, the “rc” display and the remote start symbol goes out and the mode has to be activated again.
To cancel the “Standby for remote control” function, press the On/Off button 4 for around 3 seconds.
9.16. Remote start release
The function of the remote start output is selected with the remote start release (note
EN60335-2-53) Connection: see “5.14 Connecting the remote start” on page 21.

• By default, the remote start release is set to OFF. The remote start is activated using “Standby for remote control”.
• If you want to enable the remote start output for various devices (such as a coin box, remote start system, door monitoring), proceed as follows:

The controller must be set to standby mode when this is programmed.
Press the On/Off 4 and Minus 5 buttons simultaneously for 3 seconds.
This takes you to the heating time menu.
Press the Mode button 7 to open the language menu.
Change to remote start release with the Mode button 7.
Make your selection here using the Minus 5 / Plus 6 buttons.
Confirm your selection using the Mode button 7.
9.17. Activating an additional control unit
Up to four control units can be connected (see “5.3. Connecting the control unit” on page 18).
Switch on the controller (standby indicator lamp 8 lights up).
Unplug the data cable of the additional control unit. Press and hold the Minus 5 and Plus 6 buttons on the unplugged control unit while plugging the data cable back in.
► The bus address that was most recently set flashes in the display 1.
Use the Minus 5 and Plus 6 buttons to select the corresponding bus address (0 to 3). Confirm your selection using the Mode button 7.
Please note that the controller has to be switched off for 10 seconds after this change so that the setting is saved.
If you are using several control units, you have to assign a bus address to each one of them. Address 0 is the default value. Each address (0–3) can only be used once.

9.18. Setting the acoustic signal
The acoustic signal can be set for the following functions:
To do this, the controller must be set to FIN or HUM mode.
Press the Mode button 7 until the timer indicator lamp a lights up.
► The value of the set function flashes in the display 1.
Select the preferred value using the Minus 5 and Plus 6 buttons.
Confirm your selection using the Mode button 7.

9.19. Activating the rolling display
Rolling display means that the temperature and humidity (optional) are shown alternately in the display 1 (10 second interval)
To do this, the controller must be set to FIN or HUM mode.
Press the Mode button 7 until the light indicator lamp 2 lights up.
Press the Minus 5 and Plus 6 buttons simultaneously for 3 seconds.
► OFF flashes in the display 1 (= default)
Press the Plus 6 button to switch to ON. Confirm your selection using the Mode button 7.
► The standby indicator lamp 8 lights up.
9.20. Setting the post-drying programme
You can set the duration and temperature of the post-drying programme. The controller must be set to HUM mode for this.
Press the Mode button 7 until the humidity indicator lamp 3 lights up. Press the Plus 6 and Minus 5 buttons simultaneously for 3 seconds.
► 0 flashes in the display 1 (= default)
You can now adjust the temperature value if necessary using the Plus/Minus buttons (-9 to +9). Press the Mode button 7.
► The standby 8, timer a and humidity 3 indicator lamps light up.
► The set post-drying time for heating and fan flash in the display 1 (0–120 min; default 15 min)
Select the preferred value using the Minus 5 and Plus 6 buttons. Press the Mode button 7.
► The standby 8 and timer a indicator lamps light up.
► The set time for post-drying without heating but with fan flashes in the display 1 (0–30 min; default 15 min)
Select the preferred value using the Minus 5 and Plus 6 buttons. Press the Mode button 7.
► The standby 8 and temperature 9 indicator lamps light up.
► The set temperature for post-drying flashes in the display 1 (70–90 °C; default 80 °C)
Select the preferred value using the Minus 5 and Plus 6 buttons. Confirm your selection using the ON/OFF button 4.
9.21. Switching off the sauna controller
If you will not be using the sauna controller for an extended period of time, switch it off at the main switch b.

Cleaning and maintenance

10.1. Cleaning
ATTENTION!
Damage to the unit
The sauna controller is resistant to splashing water, but direct contact with water
could still damage it.

• NEVER immerse the device in water.
• Do not pour water over the device.
• Do not get the device too wet when cleaning it.

1. Soak a cleaning cloth in a mild, soapy water.
2. Wring out the cloth well.
3. Carefully wipe the housing of the sauna controller.

10.2. Maintenance
The sauna controller does not require any maintenance.

Disposal

• Dispose of packaging materials in accordance with the applicable waste disposal regulations.
• Used devices contain reusable materials as well as hazardous substances. Therefore, do not dispose of your used device with household waste, but do so in accordance with the locally applicable regulations.

Troubleshooting

12.1. Error messages
The sauna controller is equipped with diagnostic software which monitors system statuses when it is switched on and during operation. As soon as the diagnostic  software identifies an error, the sauna controller switches off the sauna heater.
The operating symbols flash and an error number appears in the display 1.
Switch off the sauna controller using the main switch and rectify the fault before switching it on again.
The following table describes the possible faults and their causes. If necessary, quote the error number to your customer service specialist.

12.2. Fuses
Fuses for the electronics and light are located in the connection area of the basic module. They can be ordered with the item number 1-30-174 (pack of 10).
There is a fuse for the fan on the expansion board.
12.3. Temperature correction
It is possible to correct the displayed temperature value. This is possible within a range of -9 °C/+9 °C.
The controller must be set to HUM mode for this.
Press the Mode button 7 until the temperature indicator lamp 9 lights up.
Press the Plus 6 and Minus 5 buttons simultaneously for 3 seconds.
► OFF flashes in the display 1.
Press the ON/OFF 4 and Mode 7 buttons simultaneously for 3 seconds.
► 0 flashes in the display 1 (= default)
You can now adjust the displayed temperature value using the Plus 6 and Minus 5 buttons (Δ t: -9 to +9 °C).

Technical data

Ambient conditions

Power unit

Control unit

Light

Fan

Setting ranges

The maximum humidity that can be set depends on the temperature of the sauna. The higher the sauna temperature, the lower the maximum humidity level which can be set.
Thermal safety
Heater sensor with overheat cut-out (139 °C cut-out temperature) Adjustable automatic heating time limit (1 to 12 hours)* Optional single-sensor mode or two-sensor mode
Connection cables

• EN 60335-2-53 specifies a heating time limit of 6 hours for private saunas. For saunas in hotels, apartment blocks and similar locations, a maximum heating time limit of 12 hours is permissible.

sentiotec GmbH | Division of Harvia Group | Wartenburger Straße 31, A-4840 Vöcklabruck
T +43 (0) 7672/22 900-50 | F -80 | info@sentiotec.com
www.sentiotec.com

Documents / Resources

| sentiotect WC4-B-D/W/S Electric combi sauna heater control [pdf] Instruction Manual
WC4-B-D W S Electric combi sauna heater control, WC4-B-D W S combi sauna heater control, sauna heater control, heater control, control
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References

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• sentiotec
• sentiotec / Downloads

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