Amana PTAC Air Conditioner Error Codes



Package Terminal, Air Conditioner/Heat Pump. Amana Diagnostic Codes;

Amana PTAC R410A AC Error Codes

If there are no active failures or lockouts, the display will show a double dash, “- -”. If there is a code listed, see the unit “Diagnostic Codes” chart for a list of definitions.

Error CodesProblem
FPFreeze Protection Engaged. The room temperature measured by the wireless remote thermostat or indoor ambient thermistor active sensor falls below 40°F. No Action required. This setting will disengage when the room temperature rises above 43°F.
FdFront Desk switch is closed. All outputs are switched off. Open front desk switch to allow occupant unit operation.
EoUn-Configured Service Board - All operation held awaiting configuration. Enter Configuration Menu and set "C3" to "C" for coolers with electric heat or "H" for heat pumps.
EHEmergency Hydronic Engaged. The EHH switch is closed. Compressor is switched off. Open front emergency hydronic switch to allow occupant unit operation.
LSLoad Shedding Engaged. The LS switch is closed. Compressor and Electric heat is switched off. Open load shedding switch to allow occupant unit operation.
OnControl is configured to respond to a wired thermostat. No action if a wired thermostat is being used. Otherwise, see Configuration Settings.
oPOpen Door Lockout (DS1 & DS2 open; wireless). Close Room Door. Unit will not condition space with door open.
nPWindow Switch Lockout - (LS & INN open). Close Room Door or Window. Unit will not condition space with door or window open.
HPHeat Sentinel - (WIAT > u3). No action required. This setting will disengage when the room temperature falls.
UrUn-Rented Status (EHH & INN or wireless). Front Desk needs to set to Rented mode (if applicable).
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. Replace black Indoor Ambient Thermistor or Wireless Remote Thermostat.
F2Wireless Remote Thermostat failure. Replace Wireless Thermostat.
F3Indoor Ambient Thermistor reads outside the range -20°F to 200°F. Replace black Indoor Ambient Thermistor.
F4Indoor Coil Thermistor either above or below operating tolerances. Replace Red Indoor Coil Thermistor.
F5Wireless Thermostat failure. Attempt to rebind Wireless Thermostat or Replace Wireless Thermostat.
F6Indoor Discharge Thermistor either above or below operating tolerances. Replace Yellow Indoor Discharge Thermistor.
FbLow Remote Battery Warning. Replace Batteries in Wireless Devices.
H1High Voltage Protection engaged. Power supply voltage is to high. Check for incoming power at correct voltage.
brBrown Out Protection engaged. Power was lost or voltage is low. Check for incoming power at correct voltage.
L6Discharge Air Too Hot. Clean Filter or Remove Air Blockage.
LCOutdoor Coil Thermistor temperature high. Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning.
C2Indoor Air Recirculation. Large delta between thermostat and return. Clean Filter or Remove Air Blockage or Close Vent Door or Improve indoor to outdoor seal.
C5Outdoor Coil temperature too high for outdoor ambient temperature. Check for Blocked Outdoor Air or Clean Coil.
C1Indoor Coil is freezing up. Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.
C3Indoor Coil is freezing up. Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.
C4Indoor Coil froze up. Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.
C6Poor Unit Performance. Check for blower motor, compressor, or electric heat operation.
C7Indoor Freezing Lockout (ICT - IAT > 20) +10 Min. Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

Amana Air Conditioner Troubleshooting:

Amana Air Conditioner Troubleshooting
Amana Air Conditioner Troubleshooting

Troubleshooting Chart for ECM Variable Speed Air Circulator Blower Motors




SymptomPossible Causes
Motor rocks slightly when startingThis is normal start-up for variable speed motor.
Motor won't start1. No movement. 2. Motor rocks, but won't start.
Motor oscillates up & down while being tested off of blowerIt is normal for motor to oscillate with no load on shaft
Motor starts, but runs erratically1. Varies up and down or intermittent. 2. "Hunts" or "puffs" at high CFM (speed).
Excessive noise1.Air noise. 2.Noisy blower or cabinet. 3."Hunts" or "puffs" at high CFM (speed).
Evidence of MoistureMotor failure or malfunction has occurred and moisture is present

 

Amana PTAC R410A AC Error Codes C1,C2,C3,C4,C5,C6,C8,C9,CD,D5,D7,D8,D9,DA,DB,DC,DF,R4,R5
Amana PTAC R410A AC Error Codes C1,C2,C3,C4,C5,C6,C8,C9,CD,D5,D7,D8,D9,DA,DB,DC,DF,R4,R5
DIAGNOSTIC CODES L6,LC,C2,C5,C1,C3,C4,C6,C7
DIAGNOSTIC CODES L6,LC,C2,C5,C1,C3,C4,C6,C7
Amana PTAC Wiring Diagram
Amana PTAC Wiring Diagram

Amana PTAC R410A AC Manual PDF

PACKAGE TERMINAL AIR CONDITIONER/HEAT PUMP Standard and Remote Applications with LED M70 Control Board and R-410A PDF




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