Amana AVXC20 Series Service Instructions Manual page 71

TROUBLESHOOTING
ClimateTalk PCB LED Transmitted
Fault Code Display ClimateTalk Message
30 E30 OD CTRL FAIL3
31 E31 HI LEAK CURRENT
32 E32 HI TEMP CTRL1
33 - HI TEMP CTRL2
34 E34 CURRENT SPIKE
35 E35 HIGH CURRENT
36 E36 STARTUP ERROR
37 E37 OD CTRL FAIL4
38 E38 COMP VOLTAGE
39 E39 OD CTRL FAIL5
40 E40 COMP MISMATCH
41 E41 LOW REFRIGERANT
42 E42 LOW LINE VOLT
43 E43 HIGH LINE VOLT
44 E44 OP TEMP RANGE
45 E45 NO COOLING TEST
47 E47 NO SYS VER TEST
Thermostat Fault
Indicates the control board may need to be
replaced.
The control has detected high leakage current (high
voltage).
This error indicates the equipment is experiencing
high temperature faults on the outdoor control
board.
This error indicates the equipment is experiencing
high temperature faults on the outdoor control
board. Control has determined continued operation
is acceptable. This indicates they may be a
problem with the equipment.
Board detected a high current condition. This
indicates the potential for a short circuit.
Board detected a high current condition.
The control encountered an abnormal condition
during the startup procedure.
Indicates the control board may need to be
replaced.
The control has detected a voltage related issue
with the compressor.
Indicates the control board may need to be
replaced.
Control determines that its compressor requirement
is different than the compressor capability.
The control has detected a low refrigerant condition.
Control detects a low power supply voltage
condition.
Control detects a high power supply voltage
condition.
The control detects the outdoor temperature
outside recommended operational range. Unit may
continue to operate normally.
The control is unable to start the Cooling mode test
because indoor heat has been turned on by
thermostat. Please set thermostat to off position.
The control is unable to start the System
Verification test because indoor heat has been
turned on by thermostat. Please set thermostat to
off position.
OUTDOOR UNIT ERROR CODES
Probable Causes
● Wiring to control board disconnected
● Faulty control board
● Noise
● Improper ground
● Faulty compressor
● Ambient air conditions too high
● Cooling bracket screw(s) missing or not properly
fastened (2-4 ton only)
● No or poor thermal grease coating between cooling
plumbing and cooling bracket on control board (2-4 ton
only)
● Outdoor fan low speed (5 ton only)
● No flow or limited flow through control board cooling
circuit (potential restriction in line or low refrigerant) (2-4
ton only)
● Stop valve not completely open (2-4 ton only)
● Ambient air conditions too high
● Cooling bracket screw(s) missing or not properly
fastened (2-4 ton only)
● No or poor thermal grease coating between cooling
plumbing and cooling bracket on control board (2-4 ton
only)
● Outdoor fan low speed (5 ton only)
● No flow or limited flow through control board cooling
circuit (potential restriction in line or low refrigerant) (2-4
ton only)
● Stop valve not completely open (2-4 ton only)
● Current spike in supply
● Stop valve not completely open
● The compressor wire is lost phase
● Faulty control board
● Faulty compressor
● Short circuit condition
● Stop valve not completely open
● Overcharge
● Faulty control board
● Faulty compressor
● Blocked/restricted condenser coil and/or lines
● The compressor wire is lost phase
● Inconsistent compressor load
● Faulty control board
● Outdoor fan motor not connected properly
● Faulty control board
● High or low voltage from supply
● The compressor wire is lost phase
● Faulty control board
● Thermistors inoperable or improperly connected
● Faulty control board
● Memory card not correct
● Control board mismatch
● Refrigerant leak
● Low refrigerant charge
● Low line voltage supply
● High line voltage supply
● Ambient air conditions too high or low
● Heat provided by secondary heating source
● Heat provided by secondary heating source
Corrective Actions
● Check wiring to control board; Repair as needed
● Replace control board if necessary
● Check ground screws/lugs and wiring;
Repair/replace if needed
● Check the compressor; Repair/replace if needed
● Cycle power; re-try during usable ambient
temperature range
● Verify cooling bracket screws in place and
secure; Secure fasteners as needed (2-4 ton only)
● Check thermal grease inside cooling bracket on
control board; Apply additional grease as needed
● Check outdoor fan motor & wiring;
Repair/replace if needed (5 ton only)
● Check for restriction in line
● Check refrigerant charge level; Adjust if needed
(2-4 ton only)
● Check the opening of stop valve, should be full
open; Repair/replace if needed (2-4 ton only)
● Cycle power; re-try during usable ambient
temperature range
● Verify cooling bracket screws in place and
secure; Secure fasteners as needed (2-4 ton only)
● Check thermal grease inside cooling bracket on
control board; Apply additional grease as needed
● Check outdoor fan motor & wiring;
Repair/replace if needed (5 ton only)
● Check for restriction in line
● Check refrigerant charge level; Adjust if needed
(2-4 ton only)
● Check the opening of stop valve, should be full
open; Repair/replace if needed (2-4 ton only)
● Check power supply for in-rush current during
start-up or steady state operation
● Check the opening of stop valve, should be full
open; Repair/replace if needed
● Check the wire between control board and
compressor
● Replace control board if necessary
● Check the compressor; Repair/replace if needed
● Check installation clearances.
● Check the opening of stop valve, should be full
open; Repair/replace if needed
● Check refrigerant charge level; Adjust if needed
● Replace control board if necessary
● Check the compressor; Repair/replace if
needed.
● Check and clean condenser coil and/or lines
● Check the wire between control board and
compressor
● Replace control board if necessary
● Check wiring from Outdoor fan motor to control
board; Repair if needed
● Replace control board if necessary
● Correct low/high line voltage condition; Contact
local utility if needed
● Check the wire between control board and
compressor
● Replace control board if necessary
● Check the connection to thermistors;
Repair/replace if needed
● Replace control board if necessary
● Check memory card data vs. air conditioner
model
● Verify control board size vs. air conditioner
model; Replace control board if necessary
● Test for system leaks using leak test procedure
● Check refrigerant charge level; Adjust if needed
● Check circuit breakers and fuses; Replace if
needed
● Verify unit is connected to power supply as
specified on rating plate
● Correct low line voltage condition; Contact local
utility if needed
● Verify unit is connected to power supply as
specified on rating plate
● Correct high line voltage condition; Contact local
utility if needed
● Cycle power; re-try during usable ambient
temperature range
● Turn off heater using thermostat before running
AHRI mode
● Turn off heater using thermostat before
operation
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