Amana Heat Pump Troubleshooting

The Amana heat pump, as you have probably heard, is one of the best pumps of the kind. If you get it for your personal use, you will be perfectly satisfied. Anyhow, there is a slight possibility that something will go wrong. This happens regardless the brand and kind of device. If some issues occur (for instance, heat pump fan not spinning and some other ones) there is no reason for getting worried and nervous. The troubleshooting guide given below will definitely help you and make it clearer how to deal with it! Just read everything carefully and find the problem that has occurred regarding your own case.

Amana WRAC-18 Heat Pump Troubleshooting

PROBLEMPOSSIBLE CAUSESUGGESTED REMEDY
UNIT WILL NOT RUNNo power to unitPush reset button on power cord.
Set Fan Control to position other than OFF. Make sure plug is firmly seated m outlet.
Check for blown fuses, tapped circuit breakers.
LITTLE OR NO HEATING (fan and compressor run)Fresh air/exhaust damper open Obstructed indoor or outdoor airflow Dirty air filtersSet vent to CLOSED.
Unit undersized for applicationRemove obstruction from indoor grille or outdoor louvers.
Dirty air filter. Clean or replace, as needed.
Check with dealer to determine proper capacity unit for application.
LITTLE OR NO HEATING (only fan runs)Temperature Control not set properlyFor cooling, turn Temperature Control to cooler setting. For heating, turn Temperature Control to warmer setting.
NOISY UNITLoose front on mounting assembly Weak building construction Water hitting fan bladeTighten any loose parts.
Unit oversized for application: compressor cycles on and off frequentlyProvide additional support for unit.
Normal in high humidity. Stop noise by removing drain plug or adding condensate drain cup.
Check with dealer to determine proper capacity unit for application.
MOUNTING SUPPORT NOT INSTALLEDStorm window frame installed in windowSome models require removal of storm window frame before installation.
FROST ON INDOOR COILDirty air filterClean air filter by vacuuming or washing with water and mild soap.
Normal for low outdoor temperaturesTurning Temperature Control to warmer setting reduces occurrence and duration of frost.
FROST ON OUTDOOR COIL (heat pump models only)Normal for outdoor temperatures at or below 45‘FCall for service only if unit does not heat room and you have checked all problems and remedies listed under LITTLE OR NO HEATING.
ODORS IN COOLINGMold, mildew, or algae formation on wet surfacesTo reduce algae growth, use algaecide tablet in base pan; remove dram plug; add condensate dram cup and hose. Thoroughly clean unit.
ODORS IN HEATINGNormal for first time electric heater is used each seasonCaused by dust accumulation during unused months. Odor dissipates quickly with heater use.

Amana M70 Heat Pump Troubleshooting

SymptomCheck ItemMeasures
The unit does not operate.Check the power supply.Check if the rated voltage is supplied.
Check the type of the indoor unit.Check if the indoor unit type is compatible with the outdoor unit.
Check the outdoor temperature.Heating operation is not available when the outdoor temperature is 18°CWB or higher and cooling operation is not available when the outdoor temperature is below -10°CDB.
Diagnose with remote controller indication.
Check the remote controller addresses.Check if address settings for the remote controller and indoor unit are correct.
Operation sometimes stops.Check the power supply.A power failure of 2 to 10 cycles stops air conditioner operation. (Operation lamp OFF)
Check the outdoor temperature.Heating operation is not available when the outdoor temperature is 18°CWB or higher, and cooling operation is not available when the outdoor temperature is below -10°CDB.
Diagnose with remote controller indication.
The unit operates but does not cool, or does not heat.Check for wiring and piping errors in the connection between the indoor unit and outdoor unit.
Check for thermistor detection errors.Check if the thermistor is mounted securely.
Check for faulty operation of the electronic expansion valve.Set the unit to cooling operation, and check the temperature of the liquid pipe to see if the electronic expansion valve works.
Diagnose with remote controller indication.
Diagnose by service port pressure and operating current.Check for refrigerant shortage.
Large operating noise and vibrationsCheck the output voltage of the power module.
Check the power module.
Check the installation condition.Check if the required spaces for installation are provided.

Amana AVZC180481 Heat Pump Troubleshooting

LED colorLED StatusIndicationProbable CausesCorrective Actions
Red Communications LED (HIP)OffNominal condition• None• none
1 FlashCommunications Failure• Unknown packet is received• Depress learn button
2 FlashOut-of-box reset• Control power up• None
• Learn button depressed
Green Receive LED (H2P)OffNo power• No power to Outdoor unit• Check circuit breakers and fuses; Replace if needed
Communications error• Open fuse• Reset network by depressing learn button
• Communication error• Check communication wires (data 1/ data 2 wires); Replace if needed
1 Steady FlashNo network found• Broken/ disconnected communication wire(s)• Check communication wires (data 1/ data 2 wires); Replace if needed
• AC is installed as a legacy/ traditional system• Check installation type (legacy/traditional or communicating)
• Check data 1/ data 2 voltages
Rapid FlashingNominal network traffic• Control is "talking" on network as expected• none
On SolidData 1/Data 2 miss-wire• Data 1 and data 2 wires reversed at indoor unit, thermostat, or outdoor unit• Check communication wires (data 1/ data 2 wires); Replace if needed
• Short between data land data 2 wires• Check data 1/ data 2 voltages
• Short between data 1 or data 2 wires and R (24VAC) or C (24VAC common)

Amana ASX16 Heat Pump Troubleshooting

CODESTATUSDISPLAYERROR LIGHTSUGGESTED ACTION
F1Indoor Ambient Thermistor reads outside the range -20°F to 200°F & the wireless thermostat is not communicating to the unit control or Indoor Ambient Thermistor (IAT) without a wireless remote thermostat reads outside the range -20°F to 200°F.YYReplace black Indoor Ambient Thermistor or Wireless Remote Thermostat.
F2Wireless Remote Thermostat failureNNReplace Wireless Thermostat.
F3Indoor Ambient Thermistor reads outside the range -20°F to 200°FYNReplace black Indoor Ambient Thermistor.
F4Indoor Coil Thermistor either above or below operating tolerances.NYReplace Red Indoor Coil Thermistor.
F5Wireless Thermostat failure.NYAttempt to rebind Wireless Thermostat or Replace Wireless Thermostat.
F6Indoor Discharge Thermistor either above or below operating tolerances.NYReplace Yellow Indoor Discharge Thermistor.
FbLow Remote Battery Warning.NYReplace Batteries in Wireless Devices.
H1High Voltage Protection engaged. Power supply voltage is to high.YNCheck for incoming power at correct voltage.
brBrown Out Protection engaged. Power was lost or voltage is low.NN
L6Discharge Air Too Hot.NYClean Filter or Remove Air Blockage.
LCOutdoor Coil Thermistor temperature high.NYClean Condenser Coils, Check Fan for fault. Code will reset after cleaning.
C2Indoor Air Recirculation. Large delta between thermostat and return.NYClean Filter or Remove Air Blockage or Close Vent Door or Improve indoor to outdoor seal.
C5Outdoor Coil temperature too high for outdoor ambient temperature.NYCheck for Blocked Outdoor Air or Clean Coil.

Amana GA Series Heat Pump Troubleshooting

ProblemCauseSolution
UNIT DOES NOT START• Unit may have become unplugged• Check that plug is plugged securely in wall receptacle.
• Fuse may have blownNote Plug has a test/reset button on it. Make sure that the plug has not tripped.
• Circuit breaker may have been tripped• Replace the fuse.
• Unit may be off or in wall thermostat mode. Check section on dipswitch settings to verify dipswitches are set properly.• Reset circuit breaker.
• Unit may be in a protection or diagnostic failure mode.• Turn unit on (bottom right button on keypad).
Note: If the unit turns on. the LED will be green. If the unit is off. the LED will be red. If there is no LED on. there is a problem with power or damage to the control.
UNIT NOT COOLING/HEATING ROOM• Unit air discharge section is blocked• Make sure that curtains, blinds or furniture are not restricting or blocking unit airflow.
• Temperature setting is not high or low enough Note: Setpoint limits may not allow the unit to heat or cool the room to the temperature desired.• Reset to a lower or higher temperature setting.
Check section on dipswitch settings.• Remove and dean filters.
• Unit air filters are dirty.• Allow sufficient amount of time for unit to heat or cool the room. Start heating or cooling early before outdoor temperature, cooking heat or gatherings of people make room uncomfortable.
• Room is excessively hot or cold when unit is started.• Close vent door.
• Vent door left open• Check dipswitch settings for desired comfort.
• Unit may be in a protection or diagnostic failure mode. Check section on Intelligent Self-checking Control.Wait approximately 3 minutes for compressor to start
• Compressor is in time delay. There is a protective time delay (approx. 3 minutes) on starting the compressor after a power outage (or restarting after it has been turned off), to prevent tripping of the compressor overload.
DISPLAY HAS STRANGE NUMBERS/CHARACTERS ON IT• The unit may be in a diagnostic condition. Check Intelligent Self- checking Control section to determine if unit has had a failure.
• The unit may be set for “C (instead of °F).
UNIT MAKING NOISES• Clicking, gurgling and whooshing noises are normal during operation of unit.
WATER DRIPPING OUTSIDE• If a drain kit has not been installed, condensation runoff during very hot and humid weather is normal If a drain kit has been installed and is connected to a drain system, check gaskets and fittings around drain for leaks and plugs.
WATER DRIPPING INSIDE• Wall sleeve is not installed level• Wall sleeve must be installed level for proper drainage of condensation. Check that installation is level and make any necessary adjustments.
ICE OR FROST FORMS ON INDOOR COIL• Low outdoor temperature• When outdoor temperature is approximately 55*F (12.8*C) or below, frost may form on the indoor coil when unit is in Cooling mode. Switch unit to FAN operation until ice or frost melts.
• Dirty filters• Remove and clean filters.
COMPRESSOR PROTECTION• Power may have cycled, so compressor is in a restart protection.• Random Compressor restart - Whenever the unit is plugged in, or power has been restarted, a random compressor restart will occur. After a power outage, the compressor will restart after approximately 3 minutes.
• Compressor Protection - To prevent short cycling of the compressor, there is a random start-up delay of 3 minutes and a minimum compressor run time of 3 minutes.

Amana ASZ Heat Pump Troubleshooting

SymptomFault Description(s)Possible CausesCorrective ActionCautions and Notes
- Motor rocks slightly when starting.- This is normal start-up for variable speed motor.
- Motor won't start.- No movement.- Manual disconnect switch off or door switch open.- Check 230 Vac power at motor.- Turn power OFF prior to repair.
- Blown fuse or circuit breaker.- Check low voltage (24 Vac R to C) at motor.Wait 5 minutes after disconnecting power before opening motor.
- 24 Vac wires miswired.- Check low voltage connections (G, Y, W, R, C) at motor.- Handle electronic motor/control with care.
- Unseated pins in wiring harness connectors.- Check for unseated pins in connectors on motor harness.
- Bad motor/control module.- Test with a temporary jumper between R - G.
- Moisture present in motor or control module.
- Motor rocks, but won’t start.- Loose motor mount.- Check for loose motor mount.- Turn power OFF prior to repair.
- Blower wheel not tight on motor shaft.- Make sure blower wheel is tight on shaft.Wait 5 minutes after disconnecting power before opening motor.
- Bad motor/control module.- Perform motor/control replacement check, ECM motors only.- Handle electronic motor/control with care.
- Motor oscillates up & down while being tested off of blower.- It is normal for motor to oscillate with no load on shaft.
- Motor starts, but runs erratically.- Varies up and down or intermittent.- Variation in 230 Vac to motor.- Check line voltage for variation or "sag".- Turn power OFF prior to repair.
- Unseated pins in wiring harness connectors.- Check low voltage connections (G, Y, W, R, C) at
- Erratic CFM command from "BK" terminal.motor, unseated pins in motor harness connectors.
- Improper thermostat connection or setting.- Check-out system controls - Thermostat.
- Moisture present in motor/control module.- Perform Moisture Check.
- "Hunts" or "puffs" at high CFM (speed).- Incorrect or dirty filter(s).- Does removing panel or filter reduce "puffing"?- Turn power OFF prior to repair.
- Incorrect supply or return ductwork.- Check/replace filter.
- Incorrect blower speed setting.- Check/correct duct restrictions.
- Adjust to correct blower speed setting.
- Stays at low CFM despite system call for cool or heat CFM.- 24 Vac wires mis wired or loose.- Check low voltage (Thermostat) wires and connections.- Turn power OFF prior to repair. Wait 5 minutes after disconnecting power before opening motor.
- "R" missing/not connected at motor.- Verify fan Is not In delay mode - wait until delay complete.- Handle electronic motor/control with care.
- Fan in delay mode.- Perform motor/control replacement check, ECM motors only.
- Motor starts, but runs erratically.- Stays at high CFM.- "R" missing/not connected at motor.- Is fan in delay mode? - wait until delay time complete.- Turn power OFF prior to repair. Wait 5 minutes after disconnecting power before opening motor.
- Fan in delay mode.- Perform motor/control replacement check, ECM motors only.- Handle electronic motor/control with care.
- Blower won’t shut off.- Current leakage from controls into G, Y, or W,- Check for Triac switched t'stat or solid state relay.- Turn power OFF prior to repair.
- Air noise.- High static creating high blower speed.- Check/replace filter.- Turn power OFF prior to repair.
- Incorrect supply or return ductwork.- Check/correct duct restrictions.
- Incorrect or dirty filter(s).- Adjust to correct blower speed setting.
- Incorrect blower speed setting.
- Excessive noise.- Noisy blower or cabinet.- Loose blower housing, panels, etc.- Check for loose blower housing, panels, etc.- Turn power OFF prior to repair.
- High static creating high blower speed.- Check for air whistling thru seams in ducts, cabinets or panels.
- Air leaks in ductwork, cabinets, or panels.- Check for cabinet/duct deformation.
- "Hunts" or "puffs" at high CFM (speed).- High static creating high blower speed.- Does removing panel or filter reduce "puffing"?- Turn power OFF prior to repair.
- Incorrect or dirty filter(s).- Check/replace filter.
- Incorrect supply or return ductwork.- Check/correct duct restrictions.
- Incorrect blower speed setting.- Adjust to correct blower speed setting.
- Evidence of Moisture.- Motor failure or malfunction has occurred and moisture is present.- Moisture in motor/control module.- Replace motor and perform Moisture Check.- Turn power OFF prior to repair. Wait 5 minutes after disconnecting power before opening motor.
- Handle electronic motor/control with care.