SANYO UHX1252 Split System Air Conditioner Instruction Manual

SANYO UHX1252 Split System Air Conditioner

Product Information

If you have problems or questions concerning your Air Conditioner, you will need the following information. The model and serial numbers are on the nameplate at the bottom of the cabinet.

• Model No. _____
• Serial No. ___
• Date of purchase ___
• Dealer’s address ___
• Phone number ___

Alert Symbols
The following symbols used in this manual, alert you to potentially dangerous conditions to users, service personnel or the appliance:

Installation Location

• We recommend that this air conditioner be installed properly by qualified installation technicians by the Installation Instructions provided with the unit.
• Before installation, check that the voltage of the electric supply in your home or office is the same as the voltage shown on the nameplate.

WARNINGS

• Do not install this air conditioner where there are fumes or flammable gases, or in an extremely humid space such as a greenhouse.
• Do not install the air conditioner where excessively high heat-generating objects are placed.

Avoid: To protect the air conditioner from heavy corrosion, avoid installing the outdoor unit where salty sea water can splash directly onto it or in sulphurous air near a spa.

Electrical Requirements

1. All wiring must conform to the local electrical codes. Consult your dealer or a qualified electrician for details.
2. Each unit must be properly grounded with a ground (or earth) wire or through the supply wiring.
3. Wiring must be done by a qualified electrician.

CAUTION: To warm up the system, the power mains must be turned on at least five (5) hours before operation. Leave the power mains ON unless you will not be using this appliance for an extended period.

Safety Instructions

• Read this Instruction Manual carefully before using this air conditioner. If you still have any difficulties or problems, consult your dealer for help.
• This air conditioner is designed to give you comfortable room conditions. Use this only for its intended purpose as described in this Instruction Manual.

WARNINGS

• Never touch the unit with wet hands.
• Never use or store gasoline or other flammable vapor or liquid near the air conditioner — it is very dangerous.
• This air conditioner has no ventilator for intaking fresh air from outdoors. You must open doors or windows frequently when you use gas or oil heating appliances in the same room, which consume a lot of oxygen from the air. Otherwise there is a risk of suffocation in an extreme case.

CAUTION

• Do not turn the air conditioner on and off from the power mains switch. Use the ON/ OFF operation button.
• Do not stick anything into the air outlet of the outdoor unit. This is dangerous because the fan is rotating at high speed.
• Do not let children play with the air conditioner.
• Do not cool or heat the room too much if babies or invalids are present.

Wireless Remote Control Unit

NOTE The illustration above pictures the wireless remote control unit after the cover has been lowered and removed.

Parts Name and Functions

NOTE

• The wireless remote control unit sends the temperature signal to the air conditioner regularly at five-minute intervals. If the signal from the wireless remote control unit stops for more than ten minutes due to the loss of the wireless remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the wireless remote control unit may differ from the temperature detected at the air conditioner’s position.
• When low fan speed is selected and the air conditioner is in cooling operation at a low outdoor temperature of less than 50°F, the air conditioner may automatically switch to medium fan speed to prevent freezing.

Receiver
The signal receivers except the separately installed signal receiver are mounted on the indoor units.

• If two beeps are heard, the operation lamp among the indication lamps has lighted and the timer lamp and standby lamp blink alternately in cases where heat pump models are used, this indicates a cooling/heating mode mismatch and, as such, operation in the desired mode cannot be performed. (The same beeps will be heard and the same operation lamps will light when auto cooling/heating has been selected on a model which does not have the auto cooling/heating function.)
• When local operation has been set to disable because the centralized control mode is established, for instance, pressing the ON/OFF operation button, MODE button or temperature setting buttons results in the sounding of five beeps, and the attempted change in the operation will not be accepted.

Operation

NOTE To warm up the system, the power mains must be turned on at least five (5) hours before operation.

Automatic heating and cooling
The air conditioner automatically performs heating and cooling operations based on the difference between the temperature setting and room temperature. All indoor units in the same refrigerant system can be operated with a single group control.

Simultaneous operation of multiple units (Group control)
Group control is suitable for air conditioning in a large room using multiple air conditioning units.

• One remote control unit can control up to eight indoor units.
• All indoor units have the same settings except for the airflow direction.
• The temperature sensors at the indoor unit side are used.

Using the Wireless Remote Control Unit

Slide switch This is used to set the operation mode of the indoor units and to set the flaps.

• Depending on the indoor unit used, the operation display and airflow direction display settings will differ as shown below.
• Use a pointed implement to change the switch position.
• When the switch position has been changed, press the ACL button.
• For details on the flap functions, refer to the operating instructions of the indoor unit used.
• Before use, check that the slide switch has been set to the position shown in the figure above. For details on how to set the slide switch, consult your dealer.

How to install batteries

1. Slide the cover in the direction indicated by the arrow and remove it.
2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment.
3. Use a pointed implement to press the ACL button.
   • The batteries last about a year, depending on how much you use the wireless remote control unit. Replace the batteries when the wireless remote control unit’s display fails to light, or when the remote control cannot be used to change the air conditioner’s settings.
   • When the batteries are to be replaced, make sure that both batteries are new and that the same kind of battery is used.
   • Remove the batteries if the wireless remote control unit is not going to be used for a prolonged period.
   • Dispose of the used batteries at the designated location.

How to use the wireless remote control unit

• Point the wireless remote control unit’s transmitter at the signal receiver. If the signal is received properly, a beep is heard. (Two beeps are heard only when operation starts up.)
• Signals can be received over a distance of approximately 26 ft. This distance is approximate: it may be slightly more or less depending on how much charge remains in the batteries and on other factors.
• Ensure that the signals will not be blocked by any objects positioned between the transmitter and signal receiver.
• Avoid placing the wireless remote control unit where it will be exposed to direct sunlight or in the direct path of the air blown out from the air conditioner, near a heating appliance, etc.
• Do not drop, throw or wash the wireless remote control unit.
• Signal reception may not be accepted in rooms with fluorescent lights that use the electronic instantaneous lighting system (rapid start system) or inverter system. For further details, contact your dealer.

When mounting the wireless remote control unit on a wall for use

• Before mounting the wireless remote control unit on the wall, place the unit at the mounting position, press the ON/OFF operation button and check that the signals are received properly.
• To remove the wireless remote control unit, disengage it by pulling it toward you.

Operating tips

• Do not operate the wireless remote control unit too far away from the signal receiver. Doing so may cause operational errors. Make absolutely sure that the wireless remote control unit and signal receiver are both in the same room.
• When operating the wireless remote control unit, point it directly at the signal receiver. A beep is heard when a signal is received properly.
• Avoid places where the wireless remote control unit will be obscured by curtains, etc. Remove it before operation.

Address Settings
When a multiple number of indoor units that can be operated by the wireless remote control unit have been installed in the same room with a multi-unit or single-unit installation, this button enables addresses to be set in order to prevent the sending of signals to the wrong indoor unit. Each of up to six indoor units can be controlled separately using its own wireless remote control unit by matching the number of the address switch on the operation area of the indoor unit and the number used for the address of its wireless remote control unit. (The indoor units cannot be controlled separately when they are used in a flexible combination format, simultaneous operation of multi units format or any other such format since they will all operate at the same time.) The signal receiver has an address switch for signal reception, and the wireless remote control unit has an address switch for signal transmission.

How to check the addresses
When the ADDRESS button on the wireless remote control unit is pressed, the current address appears on the wireless remote control unit’s display. The buzzer sounds if the address displayed matches the signal receiver’s address. (The buzzer always sounds if “ALL” appears as the address display.) If “ALL” appears as the address display, operations can be performed irrespective of the signal receiver’s address. Point the wireless remote control unit at the signal receiver of the unit to be operated, and send the signal.

How to set the matching address

• Wireless remote control unit’s address setting

1. When the ADDRESS button is held down for 4 or more seconds, “ ” lights on the  

wireless remote control unit’s display, and the current address blinks.

2. Each time the ADDRESS button is now pressed, the address changes by one setting in the following sequence: ALL → 1 → 2 → 3 … → 6 → ALL.  

Select the setting which matches the setting of the address switch in the operation area of the indoor unit to be operated.

3. When the SET button is now pressed, the address stops blinking and lights instead, and it remains on the display for 5 seconds.  

The buzzer sounds if the setting matches the setting of the address switch in the operation area of the indoor unit.
NOTE When the batteries are replaced, the address setting returns to “ALL”.

Emergency Operation

In any of the following events, use the Emergency operation button to operate the air conditioner on a makeshift basis.

• When there is no charge remaining in the wireless remote control unit’s batteries
• When the wireless remote control unit has failed
• When the wireless remote control unit has been lost or misplaced

X type Initiate operation using the Emergency operation button in the operation area of the indoor unit.

T type Initiate operation using the Emergency operation button in the signal receiver on the indoor unit.

K type Initiate operation using the Emergency operation button in the operation area of the indoor unit.

NOTE

• TEST is used to initiate a trial run when the air conditioner is first installed. It is not used under normal circumstances.
• To restart the wireless remote control unit’s operation, the ON/OFF operation switch must be set to ON without fail. If it is kept at the OFF setting, the signals from the wireless remote control unit will not be accepted.

A, U, D type Initiate operation using the Emergency operation button in the signal receiver.

Troubleshooting

Check out the following points before requesting service.

If the trouble persists even after performing the checks recommended above, shut down the air conditioner’s operation, set the local power switch to OFF, and contact your dealer with the model number and trouble symptoms. You must NOT attempt to make repairs yourself due to the dangers involved. If one or more of the indication lamps is blinking, give this information to the dealer as well.

Adjusting the Airflow Direction

4-way (X) air conditioner is equipped with auto flaps. You can set the airflow direction to a specific angle or to the sweep mode using the remote control unit.

CAUTION Do not move the flap with your hands.

4-way type (X)

• The air outlet flap can be easily removed and washed with water.
• Be sure to always stop operation before removing the flap.
• After washing with water, allow it to dry, and then remount it with the arrow facing outward.

Ceiling mounted type (T)

• A. Vertical directions (automatic)
  This air conditioner is equipped with an auto flap. You can set the airflow direction to a specific angle or to the sweep mode using the remote control unit. (Refer to the description of the remote control unit.)
  CAUTION Do not move the flap with your hands.

• B. Horizontal directions (manual)
  The horizontal airflow direction can be adjusted manually by moving the vertical vanes to the left or right.

Wall mounted type (K)

• A. Vertical directions (automatic)
  Confirm that the remote control unit has been turned on. Press the FLAP button to start the flap moving up and down. If you want to stop the flap movement and to direct the air in the desired direction, press the FLAP button again. In the cool mode, don’t direct the flap down more than 30°, otherwise, condensation may drip on to the floor. Zone ‘‘A’’ is the recommended flap position for cooling.
  CAUTION Do not move the flap with your hands.

• B. Horizontal directions (manual)
  The horizontal airflow direction can be adjusted manually by moving the vertical vanes to the left or right.

Semi-concealed type
1-way type (A)
Hold the flap and move it up and down to adjust the direction of the airflow. When the flap moves, the line engraved on the rim of the disc will move up and down. In the cool mode, manually adjust the angle of the flap so that the indicator is in line with the blue rectangular mark on the label. Otherwise, condensation may drip onto the floor.
In the heat mode, adjust the flap so that the indicator is in line with the red rectangular mark.

Concealed duct type (U, D)
This air conditioner is not equipped with air outlet parts. These must be obtained locally. Please refer to the manual of the locally adopted air outlet parts.

Adjusting the Airflow Direction for Multiple Indoor Units Using a Single Remote Control Unit

• The airflow direction cannot be set using the remote control unit for the 1-way type (A) and concealed duct type (D, U).
• If multiple indoor units are connected to a remote control unit, the airflow direction can be set for each indoor unit by selecting the indoor units (see the operation below).

Auto Flap ( ) button

• To set the airflow for individual units, press the UNIT button. Display shows the indoor unit number under group control. Set the airflow direction for the indoor unit that is shown on the display.
• Each time UNIT is pressed, the indicator changes in the order shown below.
• When nothing is displayed, you can make the setting for all indoor units in one operation.
• The unit number is displayed as Outdoor Unit Number–Indoor Unit Number. It varies depending on the number of units under group control.

Special Remarks

‘‘DRY’’ Operation

• How it works
  • Once the room temperature reaches the level that was set, the unit repeats the cycle of turning on and off automatically.
  • In order to prevent the humidity in the room from rising again, the indoor fan also turns off when the unit stops operating.
  • The fan speed is set to ‘‘LO.’’ automatically, and cannot be adjusted.
  • ‘‘DRY’’ operation is not possible if the outdoor temperature is 59°F or less.

Heating Operation

• Heating performance
  • Because this appliance heats a room by utilizing the heat of the outside air (heat pump system), the heating efficiency will fall off when the outdoor temperature is very low. If sufficient heat cannot be obtained with this heat pump, use another heating appliance in conjunction with this unit.
• Defrosting
  • When the outdoor temperature is low, frost or ice may form on the outdoor heat exchanger coil, reducing the heating performance. When this happens, a microcomputer-controlled defrosting system operates. At the same time, the fan on the indoor unit stops (or runs at very low speed in some cases) and the ‘‘STANDBY’’ indicator appears on the display until defrosting is completed. Heating operation then restarts after several minutes. (This interval will vary slightly depending upon the outdoor temperature and how frost forms.)
• (standby) on the display
  • For several minutes after the start of heating operation, the indoor fan will not start running (or it will run at very low speed in some cases) until the indoor heat exchanger coil has warmed up sufficiently. This is because a cold draft prevention system is operating. During this period, the ‘‘ ****’’ (standby) indicator remains displayed.
  • ‘‘ ****’’ (standby) remains displayed during defrosting or when the compressor has been turned off (or when the unit is running at very low speed) by the thermostat when the system is in the heating mode.
  • Upon completion of defrosting and when the compressor is turned on again, ‘‘ **’’ (standby) will turn off automatically as heating operation resumes.
    NOTE** Should the power fail while the unit is running
    If the power supply for this unit is temporarily cut off, the unit will automatically resume operation (once the power is restored) using the same settings before the power was cut off.

Setting the Timer

Using the timer

• Set the timer during air conditioner operation.

Time indicator of timer

• Each time ****is pressed, the time setting increases at 0.5-hour (30 minute) intervals. The upper limit is 72.0 hours.
• Each time ****is pressed, the time setting decreases at 0.5-hour (30 minute) intervals. The lower limit is 0.5 hours.

Timer indicator

• The timer cycles through the following options each time  (TIMER SET button) is pressed.

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