KWIKOOL KPOX-XX Portable Air Conditioner Instruction Manual

KWIKOOL KPOX-XX Portable Air Conditioner

Product Information

• Specifications
  • Brand: Kwikool
  • Series: KPOX-XX
  • Type: Portable Air Conditioner

Product Usage Instructions

• Section I: Unit Components
  • The Kwikool KPO Portable Air Conditioner comes with the following components:
  • Air Filters
  • Condenser Drive Belts
• Section II: Installation and Assembly
  • Follow these steps for installation and assembly:
  • Place the unit in a suitable location with proper ventilation.
  • Connect the unit to a power source following the manufacturer’s guidelines.
  • Ensure all components are securely attached before operation.
• Section III: Operational Safeguards
  • For safe operation, remember the following safeguards:
  • Do not block air vents or obstruct airflow.
  • Avoid using the unit in wet conditions.
  • Regularly check for any unusual sounds or odours during operation.
• Section IV: Unit Operation
  • To operate the unit:
  • Power on the unit using the control panel or remote (if applicable).
  • Select the desired temperature and fan speed.
  • The unit will start cooling the space accordingly.
• Section V: Built-in Safeguards
  • The unit comes with built-in safeguards such as:
  • Automatic shut-off in case of overheating.
  • Error code display for easy troubleshooting.

FAQs

• Q: How often should I clean the air filters?
  • A: It is recommended to clean the air filters every month to maintain optimal performance.
• Q: What should I do if the unit displays an error code?
  • A: Refer to the user manual for the list of alarm codes and follow the troubleshooting guide provided.

UNIT COMPONENTS

• Before installing and using the KwiKool KPO Series Portable Air Conditioner, read this manual carefully for instruc-tions on proper usage and all safeguards.
• This manual should be retained for future reference.
• There are three sizes of KPO systems.
• These are KPO5, KPO12 and KPO25.
• Before installing and using the KPO systems, read this manual carefully for instructions on proper usage and all safeguards.
• This manual should be kept for future reference.

KPO5

КРО5-XX LEGEND

1. Cold Air Return
2. Cold Air Supply
3. Condenser Air Inlet
4. Condenser Air Outlet
5. Electrical panel
6. Control Panel Access
7. Condensate Nipple
8. Fork Pocket
9. Access Door
10. Power Cord

KPO12

KP012 LEGEND

1. Cold Air Return
2. Cold Air Supply
3. Condenser Air Inlet
4. Condenser Air Outlet
5. Electrical panel
6. Control Panel Access
7. Condensate Nipple
8. Breaker Access
9. Access Door
10. Camlok Connections

KPO25

INSTALLATION AND ASSEMBLY

• A PREVIEW OF THE INSTALLATION SITE
  • WARNING: In COOL Mode, DO NOT place the KPOXX in the space that is being cooled. The KPO is designed to be outside the conditioned space and ducted in.
  • Before moving the KPO/KPOXX into place, verify the following:
  • The direction from which the supply air is coming
  • The direction to which the return air is going (cooling)
  • The direction in which the hot air exhaust is going (heat removal)
  • The direction from which the condenser make-up air is coming
  • The location of the power supply
  • The direction in which the condensate water will be pumped
  • Position the unit based on these guidelines for best results.
  • NOTE: Leave at least five feet of open space around the make-up air inlets for the condenser to ensure proper operation.
• B INSTALLATION

1. Install casters-(KPO5 & KPO12 only).
2. Lift the unit carefully with a forklift using the built-in fork pockets. Do not tilt the unit to bolt the casters to the base
3. Install and tighten the bolts and nuts, four for each caster.
4. Install flanges.
  *  **a)** Install flanges with fasteners that are included with the collars
  *  **b)** Start two fasteners in the top two female inserts that are around each inlet or outlet on the KPO
  *  **c)** Hang the collar on the two fasteners that are started in the insert
  *  **d)** Push the collar flush with the cabinet
  *  **e)** Install the remaining fasteners and tighten them well. Loose flanges will leak air and diminish performance

• C POWER CONNECTION
  • Verify the source power, phase and breaker size are compatible with the unit’s serial plate information.
  • If in doubt, contact a licensed electrician.
  • The KPO5-ton comes from the factory with eight feet of power cable sized to fit the electrical specification of the units’ electrical requirement and has no male receptacle attached.
  • Optional male cam locks can be ordered from the factory.
  • The KPO12-ton & 25-ton come without power cables and have four male cam lock connectors ready to receive the corresponding female cam locks.
  • Female cam locks, or complete power cord line sets, can be bought separately with the proper cable size attached from the factory in various lengths.
• D INSTALL CONDENSATE LINE
  • The KPO series comes equipped with a high-lift condensate pump.
  • It is important to connect the condensate line before connecting the electrical power, as the condensate pump is live when the power is engaged. Collected water in the pump’s reservoir could be ejected when powered up.
  • KPO-5 and 12-ton models, the connection is a ¼-inch outer diameter barbed fitting located on the left side as the operator faces the control just below the handle.
  • On 25-ton models, the connection is a ¼-inch outer-diameter barbed fitting located on the left side of the unit while facing the control recessed in the centre column.
• E INSTALL CONDITIONED AIR SUPPLY AND RETURN FLEX DUCT.

1. The supply air works best directed to equipment inlets or directly on the area to be conditioned.
2. The KPO series requires ducts to direct the cooling or heating into the conditioned space. This is done with a 12” duct on KPO5 & KPO12 and a 20” duct on KPO25.
3. As the operator faces the unit opposite to the control end, the air supply is on the right side of the KPO5 and KPO12 models. On KPO25 systems, the air supplies are located on a 20” flange on each side of the system.
4. Clamp supply ducting onto the flange(s) and route the duct to the desired location.
5. Install Conditioned Air Return Flex Duct.
6. The KPO portable works best when the return air duct is close to the area of the highest load. This placement allows the unit to return the load directly to the evaporator and not to linger in the confined space.
7. This is also done with a 12” duct on KPO5 and KPO12 and a 20” duct on KPO25.
8. As the operator faces the unit opposite the control end, the return is on the left side on KPO5 and KPO12. The return is two 20” flanges in the centre panel on KPO25.
9. Clamp return ducting onto the flange(s) and route the duct to the desired location.
  *  **CAUTION:** The return air duct is pulling in air and can collapse while operat-ing. Avoid this condition by pulling all the slack out of the duct and anchoring it to a fixed object. Duct collapse is the number one cause of evaporator coil freeze or low performance.

NOTE

• KPO models utilize high static blowers. The KPO systems must have a minimum of 25 feet of ducting for each inlet and outlet. KPO12 and KPO25 must have 100 total feet of duct (min 2 ducts). KPO5 must have 50 feet of total ducting (min one duct).
• For example, if using a KPO12, 100 feet of duct is needed. Use four 25-foot pcs or two 50-foot pcs on any outlet. If unsure about the current application, call KWIKOOL at 1-800-KWIKOOL.
• Customers using this unit only to blow conditioned air and who are not trying to condition a space may not need to connect a return air duct. However, the KPO series requires a minimum amount of duct to operate (see specifications).
• If operating this unit with no ducting, reduce the return air by at least 50%.

CAUTION

• Allowing the KPO to operate without duct or without reducing the return air could cause condensate water leakage, diminished tem-perature difference and/ or evaporator motor failure.
• Install condenser flex duct, and hot air discharge in COOL mode.
• Direct the hot air discharge away from the conditioned space and away from the condenser air intake. This is especially true when the KPO is used in a confined space or indoor closed space.
• This is done with a 12” duct on KPO5 and a 20” duct on KPO12 and KPO25.
• For the 12- and 25-ton KPO (the 25-ton KPO has 2 20” ducts) and one 12” duct for the 5-ton KPO, clamp the duct onto the flange(s) on the control side of the KPO and route to the desired location. See specifications for maximum duct length.

NOTE

• It is not necessary to connect a hot air discharge duct if using the KPO in heat mode or outdoors and ducting cooling into a space.
• When used indoors or in a confined space in COOL mode, and the hot air exhaust is ducted out, the KPO must have a supply of makeup air for the condenser.
• The condenser make-up air cannot be ducted into the KPO on standard models and must come from the surrounding space.

CAUTION

• Make sure there is adequate fresh air supply, or the unit will shut down on a High-Pressure alarm (HP) to protect the compressor from catastrophic failure.

OPERATIONAL SAFEGUARDS

• Read the following warnings and safeguards carefully before installing or moving the KwiKool.

WARNING

• Do not operate or install the KwiKool unit in a potentially explosive, combustible, or corrosive gas atmosphere.

WARNING

• To avoid electrical shock, keep the KwiKool system away from direct contact with water and any liquids. Do not touch the system with wet hands.

WARNING

• To avoid burns and fire damage, keep the KwiKool system away from flammable materials and open flames.

WARNING

• Do not move the system while it is operating. Before moving the system, first turn to OFF then unplug the system from the power source. Remove all pipes and hoses attached to the KwiKool unit. Only then should the casters be unlocked.

CAUTION

• To ensure the KwiKool system is stable, the floor on which the system is to be placed should be level, free of vibration and strong enough to support the weight of the KwiKool model. Lock casters to prevent unit movement.

CAUTION

• Do not tilt or overturn the unit, since this could damage the compressor.
• Do not place objects on top of the unit.
• Do not insert your hand or any other object into the cold air supply chutes.
• Do not operate the KwiKool system with its service doors open.
• If the KwiKool system makes abnormal noises or vibrations, call KwiKool at 1-800-594-5665.

UNIT OPERATION

• A STARTUP

1. Apply electrical power. When power is supplied to the unit, the controller will become operational. All KPO systems are equipped with a power/ phase monitor.
2. KPO12 and KPO25 users will have to place the unit’s built-in breaker in the ON position to engage the controller.
3. Turn the system to ON. If less than 30 seconds have elapsed from the time power is engaged, an audible alarm will sound. The control will display AL and PH. This is a normal condition. If the PH appears, this is a fault. Incorrect phase is the most common cause in 3-phase systems.
  *  **a)** If the Alarm and PH display fails to clear in 30 seconds on a 3-phase system, qualified personnel may turn the source power off and swap any of the 3-line voltage wires with each other.
    *  **CAUTION:** The green wire is the ground wire and is not to be inserted/ swapped into the phase wiring cam lock or damage may result.
  *  **b)** Power the unit back up, wait for 30 seconds and then proceed to the next step. If the fault fails to clear after changing the phase, turn the power off at the source, return the wires to the original configuration and refer to the troubleshooting section of this manual.
4. Set the controller – The controller of the KPO is factory set to OFF. In the COOL mode, with the manual fan engaged and set to start cooling if the temperature is above 72 degrees Fahrenheit, displays the current room temperature and is set to come on within a 2-degree temperature difference.
  *  **NOTE:** The control memory holds the last parameters entered, including ON and OFF, if power is turned off or lost and then restored.

• B LCD BUTTONS FUNCTIONALITY TABLE

1. Press the ON/OFF icon. A short press on this button turns the system on or off and the system operates in the last parameter that was entered in operating Mode.
2. A short press on the UP or DOWN arrows raises or lowers the set point in the current operational mode.
3. A short press on the MODE icon changes the operating mode to COOL, HEAT, FAN, AUTO SWITCH HEAT/COOL (Optional) which is signified by both HEAT and COOL icons being displayed simultaneously.
  *  **NOTE:** In each mode except FAN, the currently operating mode is blinking on and off while operating in that mode. If the icon is not flashing, then the system is not calling for that operation because the set point is met, or the system may be in time out, signified by the F or C next to the room temperature display blinking on and off.
4. A short press on the FAN icon changes the system to AUTO FAN or MANUAL FAN in the COOL mode.
  * When set in AUTO FAN (AF), the supply air in COOL mode will only operate when the compressor is on. The letters AF show on the display when using this feature.
  * When set in MANUAL FAN, the supply air fan in the COOL mode is always on. AF will not display in MANUAL FAN. This feature is only available in COOL mode.
  * The supply air is always on in HEAT or FAN mode and the supply air may operate in the OFF mode if set in HEAT and turned off before the cycle is completed.

• C OPERATING MODES
  • FAN MODE
  1. Set the mode to the fan.
  2. The fan icon displays solid and the supply air fan starts with no cooling or heating operation.
  3. A short press on the power button stops the fan operation.
  • COOL MODE
  1. Set the mode to cool, a 2.5-minute time delay starts for the compressor to prevent short cycling, signified by F or C blinking on and off on the display
  2. Adjust the set point below the room temperature displayed on the control to the desired temperature
  3. Select FAN. This requires a short press on the icon to display AF (AUTO FAN) for supply fan oper-ation when the compressor starts.
  4. If already in ON mode, a short press on the FAN icon begins continuous supply fan operation (AF will not display when using this feature).
  5. Press ON. If the time delay is finished, the icon for COOL starts to blink, the compressor starts, and cooling will begin. After the system has built up enough pressure, the hot air exhaust fan will start to ramp up. It is normal for this fan to delay in starting and normal for it to slow down and speed up during the operating process.
  • NOTE: The hot air exhaust fan (condenser discharge) is not operational in Heat or Fan mode. It only operates in Cool mode.

HEAT MODE (Optional)

• Set the mode to HEAT. Adjust the set point above the room temperature displayed on the control to the desired temperature. Press ON and heating will begin.
• Fire-rated or high-temperature duct is NOT required to use with the KPO series in heat mode.
• The heat rating for KPO systems is as follows: KPO25 is 48 KVA, KPO12 is 24 KVA, and KPO5 is 12 KVA.

NOTE

• Operators do not have control of the supply fan in this mode. The supply air fan is always on when ON is selected.

NOTE

• The heat function on KwiKool KPO systems will not require a time delay or compressor operation; therefore, there is no delay in starting and no need to manage condensate water or condenser air discharge.

OPERATING MODE, AUTO COOL/ HEAT (optional) .

1. Set the mode to HEAT COOL. Both icons are displayed in this mode.
2. Enter the set point using the UP or Down arrows.
3. The system will automatically shift between cool or heat, based on demand within a 4-degree tem-perature difference when turned ON. See the example below for more information.

EXAMPLE

• The set point is 72 F. The system is set in the HEAT/COOL Mode.
• The room reaches the set point in COOL mode and the compressor cycles off.
• If the temperature in the room continues to drop and gets down to 70 F, then the HEAT mode will start and heat will come on until the set point of 72 is reached.
• The heat then cycles off. If the temperature continues to rise and gets to 74 degrees, the system switches to COOL mode cools the space to the set point and then cycles off.
• The cooling or heating icon flashes on and off to signify which operation is currently on and the system operates the se-lected Fan feature for each function.

TECHNICAL SETTINGS

• Access to these operations is described later in this manual.
• Users and technical staff menus all have different features that allow access to settings and certain functions of the control based on information supplied by the engineers.

CYCLING OF POWER ON/OFF BUTTON:

1. After the system has reached its set point in Cool or Heat mode it will automatically cycle off or the user may choose to turn the system off by selecting OFF.
2. If the unit cycles off or is turned off, the time delay will always activate when the system again calls for cooling
3. When cycling off by making the set point, the supply air fan stays on in Heat mode. In Cool mode, the fan stays on only if MANUAL FAN is selected.
4. Heating or cooling will begin automatically when the temperature rises above or below the set point, depending on the chosen mode.
5. Turning the system off manually will turn the evaporator fan off and not allow the system to restart until the control is set to ON and the return air temperature is near the set point.
6. In FAN mode the supply air fan only shuts down when OFF is selected.
7. In Heat mode, the supply air fan can still operate when turned OFF to cool the heat strips. if the system was turned off before the heat cycle was complete, the fan will shut down when the strips are cool.

BUILT-IN SAFEGUARDS

• A COMPRESSOR TIME DELAY
  • Protects the KwiKool while in COOL mode from potential damage by delaying the compressor from starting before the pressures in the mechanical system equalize.
  • Always activates when the KwiKool cycles off or is turned off, or if power is lost and then restored.
• B HIGH-PRESSURE SWITCH AND ALARM
  • Protects the KwiKool from potential damage to the mechanical system by shutting down and alerting operators of a condition such as stopped or slowed airflow over the condenser coil, make-up air tem-perature above operating range, or mechanical failure.
  • If these conditions exist, the KwiKool will sound an audible alarm only, and display HP on the control.
  • To resume operation, the system requires a manual reset after corrective action is taken.
  • The reset switch is located on the left side of the unit as the operator faces the control in the service door access on the compressor discharge line for KPO5 and KPO12. Push in to reset. If activated, the operator will hear a click.
  • KPO25 systems have two reset switches located in the return air compartment of the system, mounted one on each side of the compartment. If activated, the operator will hear a click.
  • Be sure to reset both switches if getting the HP alarm. If this alarm is engaged the system will not operate in COOL, FAN, or HEAT mode.
• C LOW-PRESSURE SWITCH AND ALARM
  • Protects the KwiKool from potential damage to the mechanical system by shutting down and alerting operators of the condition.
  • This safety mode activates when pressures below 20 PSI are detected in the mechanical system of the KwiKool.
  • The KwiKool will sound an audible alarm and display LP on the control.
  • There is an automatic reset upon correction of the low-pressure condition.
  • If this alarm is engaged the system will not operate in COOL, FAN or HEAT mode. Call 1-800-KWIKOOL, if this alarm is present on initial startup.
• D SERVICE PORTS
  • Located in the service access door, on the left side when facing the control panel on KPO5 and KPO12.
  • KPO25 service ports are in the return air compartment.
  • This gives service personnel a connection point for service gauges to monitor the operating pressures of the KwiKool.
• E SIGHT GLASS
  • Located in the condenser access compartment on the control side of the KPO, the sight glass allows operators and service personnel to view the condition of the refrigerant returning to the evaporator coil.
  • Used as a diagnostic tool by qualified personnel.
• F AUTOMATIC RESTART
  • In the event of a power loss, the KwiKool resumes operation when the power is restored if in the ON position. All operational functions are saved in the memory of the control.
• G CONDENSATE PUMP & HIGH-LEVEL ALARM
  • KPO systems are factory-equipped with an internal high-lift condensate pump.
  • KwiKool condensate pumps can pump the condensation collected in the reservoir of the pump to a drain or other area approved for the discharge water by attaching ¼” I.D. tubing to the ¼” O.D. barbed condensate outlet.
  • KwiKool condensate pumps have a pump safety cut-off that prevents accidental water overflow by shutting the KwiKool down alerting operators with an audible alarm and displaying CP on the control panel.
  • Call 1-800-KWIKOOL if this alarm is present on initial startup.
  • The most common reason for this alarm to activate during operation is restricted water flow through the discharge tubing due to crimping or clogging, or there could be too much length in the discharge line connected to the system.
  • There is an automatic reset upon correction of the condensate flow. If this alarm is engaged the system will not operate in COOL, FAN or HEAT mode.
• H POWER/PHASE MONITOR
  • Standard on all KwiKool KPO products.
  • The power monitor samples the power supply shuts down the KPO and alerts operators with an alarm, PF displays on the control, and a red fault light displays on the monitor in the event of low or high voltage, incorrect voltage, incorrect phasing, or motor fault.
  1. The monitor is factory set to reset automatically upon adjustment of the monitor or correction of the issue indicated on the monitor. The monitor is in the electrical control panel of the KwiKool and displays the reason for activation.
  2. Clear the blinking fault history light by pressing and holding the fault button for 3 seconds.
  3. See the troubleshooting guide for adjustment details if the KwiKool phase monitor is alarming and displaying faults. If this alarm is engaged the system will not operate in Fan, Cool or Heat mode.
• I VFD-VARIABLE FREQUENCY DRIVE
  • Used on KPO systems in COOL Mode to optimize the operation of the condenser fan by slowing down and speeding up the rotations of the blower.
  • This helps to maintain the best pressure needed to operate in the current environment.
  • The VFD is in the supply return air compartment on KPO5 and KPO12.
  • On KPO25 systems it is in the condenser motor compartment.
  • The VFD displays the current operating frequency or any error message needed for fault diagnosis.
  • The condenser motor VFD will not operate the condenser fan in HEAT or FAN mode, as it is not needed for these modes.

APPLICATION REQUIREMENTS

• A AIR TEMPERATURE REQUIREMENTS COOL MODE
  • The environmental requirements of the KwiKool unit at the installation site are 0 to 110 degrees F for the condenser make-up air located on each side of the unit.
  • Standard KwiKool KPO models are not designed to operate at temperatures below 60 degrees F. on the cooling side.
  • Temperatures below 60 degrees F. will cause evaporator coil freezing.
  • If the unit operates in an environment above 110 degrees F, the high-pressure switch may trip, stopping the unit’s compressor. Instead of the compressor stopping, the operator may also notice diminished performance.
  • The High-Pressure Switch is a manual reset type and is located in the front service compartment on KPO5 and KPO12. The rest is in the return air compartment on the KPO25, and the system is equipped with two reset switches.
  • Reset is accomplished by pressing the button on the switch located on the compressor discharge line. If the switch has tripped, the operator will feel a distinct click upon reset.
• B CAPACITY & TEMPERATURE SETTINGS
  • Sizing of the KPO units is based on matching capacity to a specific heat load while maintaining a 72-degree F temperature.
  • To reach temperatures below 72 degrees F, the unit must have extra capacity.
  • CAUTION: We recommend that the operator not set the temperature set point below 72 degrees F, unless there is excess cooling capacity beyond the heat load, since this may cause the unit’s evaporator coil to freeze up.
• C POSITIONING OF UNIT
  • The unit should be positioned as close to the space to be conditioned as possible with the return air duct directly around the area of the highest load.
  • Place the KwiKool system on a level surface to ensure proper condensate water flow and be sure the surface can support the weight of the KwiKool.
  • CAUTION: Do not block the return air duct of the unit since this will cause low performance and/or evaporator coil freezing while in cool mode.
  • NOTE For the heat function to work properly, supply and return air must be in the space being heated. The system works by heating the air that is recirculating the system and will raise the overall tem-perature of the space to the set point, if properly sized.

MAINTENANCE

• A AIR FILTERS
  • The KwiKool comes from the factory with filters installed on the evaporator inlet to prevent dust and debris from entering the system and circulating in the conditioned space.
  • Factory-installed filters are a disposable type and must be periodically checked and replaced based on the air quality of the confined space.
  • CAUTION
  • Failure to maintain the filters will cause restricted airflow and can lower overall unit performance.
  • The air filter(s) are in the supply air return.
  1. Remove the return air panel by turning the slotted lock fastener to the horizontal position and lift it to remove the panel.
  2. Remove and replace the filters.
  3. Return the air panel to its designated location and turn the slotted lock fastener to the vertical (locked) position.
• B CONDENSER DRIVE BELTS
  • For KPO12 and KPO25 systems only, the KwiKool moves air over the condenser coil to remove heat from the conditioned space by way of a motor that drives a blower wheel. This wheel turns by way of a pulley and belt system.
  1. Inspect/adjust these belts every 60 days of operation, and replace as needed.
  2. Located in the condenser access compartment on the control end of the KPO, release the two slot-ted fasteners to give the operator access to the condenser belts and motor.
  3. Adjust the tension on the belts by adjusting the motor base.
  • CAUTION: Failure to maintain the drive belts will cause low performance, high-pressure trips or, in extreme cases, damage to the blower/motor in the event of a belt breaking. DO NOT ADJUST THE DRIVE PULLEY.

UTILIZING THE KWIKOOL KPO SYSTEM

• In contrast to conventional air conditioners, which circulate air conditioning capacity evenly to a space.
• KwiKool systems are used for cooling an area with a high concentration of heat load, many times from electrical or computer equipment.
• Understanding the capabilities of the KwiKool can help the operator avoid problems.
• KPO can provide spot cooling for workers or process cooling within a large space without the use of condenser ducting, such as a warehouse factory, or production areas.
• It can also provide spot cooling for workers or process cooling within a large space without the use of condenser ducting, such as a warehouse factory, or production area.
• The KwiKool system is equipped with the necessary controls to maintain those environments.

TECHNICIAN/STAFF SETTINGS

• Entrance into this function is gained by a long press on the MODE button until it beeps and flashes a lock icon, then a long press on the FAN button until it beeps, then release the FAN button and once again a long press on the FAN button.
• It will beep and then display P4.
• Use the FAN and MODE buttons to scroll through the different settings.

TECHNICIAN PARAMETER LIST

Select ON/OFF to exit, or after 1 minute the display will default back to the operating screen.

appears on the main display.
P12-Display supply air temp. (T3)| Select 0 or 1| 0-Off, 1-On
P13-T3 Display in seconds (Supply air temperature display)| Select 0-240 Seconds| The value appears on the main display
P14- Auto changeover enable (Heat/Cool)| Select 0 or 1| 0-  Disable 1-Enable

USER PARAMETER SETTINGS
A three-second press on the Settings button gains entrance into this function. Use the FAN and Mode buttons to scroll through.

USER PARAMETER LIST

Select ON/OFF to exit or after 1 minute the display will default back to the operating screen.

ALARM CODES LIST

KPO TROUBLESHOOTING GUIDE

STARTUP

PHASE

·         Control displays PH

·         Audible alarm fails to clear on start-up

·         Phase monitor displays lock-out “ Front Fault ”

| Phase monitor detects phasing issues or improper power incoming| Exchange any line voltage wire with the other, and verify incoming power.
LOW VOLTAGE

·         Control displays PH

·         Audible alarm fails to clear on start-up

·         Phase monitor dis-plays, lock-out “Front Fault”

| Phase monitor detects voltage lower than the factory setting.| Verify incoming power. Slowly lower the voltage setting on the monitor to match incoming power.
High Voltage

·         Control displays

“PH”

·         Audible alarm fails to clear on startup

·         Phase monitor dis- plays lock out “ Front Fault ”

| Phase monitor detects voltage higher than the factory setting.| Verify incoming power. Slowly raise the voltage setting on the monitor to match incoming power.
The system sounds an audible alarm. Control displays CP, LP, or HP| A condition exists with the mechanical system involving pressure or condensate flow.| See the advanced troubleshooting section below, or call 1-800-KwiKool.
The system starts up but is not operating in the selected mode.| The system is in time out; control is set above or below room temperature or control is adjusted out of operating parameters.| Wait 3 minutes, review the operations guide, Set up control.
FAULT| POSSIBLE CAUSE| POSSIBLE SOLUTION
---|---|---
Systems with phase monitors start-up but go into PH and audible alarm when the compressor starts.| Phase monitor detects voltage drop.| Observe the phase monitor on start for fault lights and adjust accordingly, verify incoming power. If no fault light is present see advanced troubleshooting below
Power is supplied but the control is blank| The low-voltage circuit is not engaged| On 12 & 25 ton models turn on the built-in breaker, all models verify incoming power to the contactor, and reset the switch on low voltage transformer
The system starts up and cools but the hot air exhaust fan speeds up and slows down.| Normal operating conditions in cool mode, especially in low temperatures| No action is required to review the operations guide.
Cool airflow is limited, water is dripping from the front of the system| The supply or return duct is collapsed, blocked or not installed, filters need to be replaced and/or the evaporator coil is freezing as a result of the above.| Verify that supply and return duct are installed to specification, remove or add duct as needed, and check air filter for blockage. Restart when thawed.
Condensate is not pumping| Water is below the pumping level. The system is in fan or heat mode| Reservoir fills, Check for line crimping. Condensate is not developed in heat or fan mode.
System sounds an audible alarm only and the display reads CP.| Mechanical system has detected a high water level in the condensate pump. System not level.| Level System

·         Inspect the condensate pump for overflow and proper operation

·         Check the condensate line for clog or crimping. Resets automatically upon correction.

Call 1-800-KwiKool.

The display reads HP.| Mechanical system has detected high pressure.| · Correct condition with air flow in or out of the condenser:

·         Inspect/replace condenser drive belts

·         Check the condenser motor for proper operation

·         Check condenser drive (VFD) for the trip, reset if needed

·         High-pressure switch requires manual reset. The pressure switch is located in the service compartment on the compressor discharge line.

Install service gauges to view pressure readings below 20 psi. Check for icing on the evaporator coil or low return air temperature. Resets automatically upon correction.
KPO control displays PH phase monitor displays lockout back fault.| A fault has been detected from the load side of a component circuit.| Inspect components for faulty or loose connections.
Chatter or hum is heard from the control box while unit is operating.| Incoming source power is poor, low voltage component is faulty.| This is not adjustable through the phase monitor. Check for proper voltage selection on 208/230-volt units, and correct incoming power. Isolate low voltage controls to find faulty components.
The evaporator coil is freezing in cool mode.| ·         Low or restricted airflow.

·         Undersized capacity, unit constantly on, unable to achieve set point.

·         Low return air temperature out of factory specifications.

·         Service door open or off.

Mechanical system malfunction.

| Review duct engineering.

·         Direct return air to the area of highest heat load.

·         Replace air filters.

·         Adjust the set point to allow the unit to cycle.

·         Add KwiKool system.

·         Close the service compartment door.

·         Install service gauges to view pressures.

The control displays A1 if equipped.| Appears when Input from A1 is opened.| Fault detected from A1 input, confirm usage and call 1-800-KWIKOOL if input code is not used but is displaying.
The control displays A2 if equipped.| Appears when Input from A2 is closed.| Fault detected from A2 input, confirm usage and call 1-800-KWIKOOL if input code is not used but is displaying.
The control displays FD.| Appears when Input from FD is engaged. This occurs when the Condenser VFD has a fault.| Check VFD and all condenser fan and motor components including belts and pulleys.
The control displays FL If applied.| Appears when the time set for filter change has elapsed.| Check the condition of air filters, and replace them as needed. Reset time for a filter change. Found in technical settings.
FAULT| POSSIBLE CAUSE| POSSIBLE SOLUTION
---|---|---
Control displays FS, if equipped.| Appears if the evaporator coil is below 28 degrees F.| Using the MODE button, move from COOL to FAN for 10 minutes to help coil thaw. Automatic reset upon thawing.
Hot air exhaust fan (condenser fan) stops. FD displays and the High-Pressure Switch trips while the compressor is operating.| The condenser drive has detected a fault with the incoming electrical power or is not receiving an operating signal.| Check the condenser motor drive (VFD) for the trip. Reset if needed. Note the displayed fault code on the drive and call 1-800 KwiKool if the problem persists.

References

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