Troubleshooting - Amana AVZC18 Installation & Service Reference

T
ROUBLESHOOTING
ClimateTalk PCB LED Transmitted ClimateTalk
Fault Code Display
12 E12 OD CTRL FAIL1
HI PRESSURE C
13 E13 (C = CRITICAL)
HI PRESSURE M
14 -
(M = MINOR)
15 E15 LOW PRESSURE C
16 - LOW PRESSURE M
17 E17 COMPRESSOR FAIL
20 E20 EEV OPEN CKT
21 E21 EEV CTRL FAIL
Thermostat Fault
Message
Indicates a general memory error.
This error indicates the equipment is
experiencing frequent high pressure
faults.
This error indicates the equipment is
experiencing frequent high pressure
faults. Control has determined continued
operation is acceptable. This indicates
they may be a problem with the
equipment.
This error indicates the equipment is
experiencing frequent low pressure
faults.
This error indicates the equipment is
experiencing frequent low pressure
faults. Control has determined continued
operation is acceptable. This indicates
they may be a problem with the
equipment.
This error indicates the equipment is
experiencing frequent compressor faults.
EEV coil is not connected.
This error indicates the equipment is
experiencing frequent low discharge
superheat faults.
Probable Causes
● High electrical noise
● Faulty control board
● Blocked/restricted condenser coil and/or
lines
● Stop valve not completely open
● Overcharge
● Outdoor fan not running
● High pressure switch (HPS) inoperable
● Faulty indoor EEV coil
● Faulty indoor EEV
● Faulty control board
● Blocked/restricted condenser coil and/or
lines
● Stop valve not completely open
● Overcharge
● Outdoor fan not running
● High pressure switch (HPS) inoperable
● Faulty indoor EEV coil
● Faulty indoor EEV
● Faulty control board
● Stop valve not completely open
● Restriction in refrigerant lines
● Low refrigerant charge
● Refrigerant leak
● Low pressure sensor inoperable or not
properly connected
● Indoor fan motor not functioning correctly
● Faulty indoor EEV coil
● Faulty indoor EEV
● Faulty control board
● Stop valve not completely open
● Restriction in refrigerant lines
● Low refrigerant charge
● Refrigerant leak
● Low pressure sensor inoperable or not
properly connected
● Indoor fan motor not functioning correctly
● Faulty indoor EEV coil
● Faulty indoor EEV
● Faulty control board
● Stop valve not completely open
● The compressor wire is lost phase
● Compressor motor failure
● Outdoor EEV coil is not connected.
● Faulty outdoor EEV coil.
● Thermistors inoperable or improperly
connected
● Faulty indoor EEV coil
● Faulty indoor EEV
● Faulty outdoor EEV coil
● Faulty outdoor EEV
● Over charge
● Faulty presure sensor
● Faulty control board
30
Corrective Actions
● Replace control board if necessary
● Check and clean condenser coil and/or lines
● Check the opening of stop valve, should be full open;
Repair/replace if needed
● Check refrigerant charge level; Adjust if needed
● Check outdoor fan motor & wiring; Repair/replace if
needed
● Check indoor EEV; Replace if needed
● Check indoor EEV coil; Replace if needed
● Replace control board if necessary
● Check and clean condenser coil and/or lines
● Check the opening of stop valve, should be full open;
Repair/replace if needed
● Check refrigerant charge level; Adjust if needed
● Check outdoor fan motor & wiring; Repair/replace if
needed
● Check indoor EEV; Replace if needed
● Check indoor EEV coil; Replace if needed
● Replace control board if necessary
● Check the opening of stop valve, should be full open;
Repair/replace if needed
● Check for restrictions in refrigerant line;
Repair/replace if needed
● Check refrigerant charge level; Adjust if needed
● Test for system leaks using leak test procedure
● Check the connection to low pressure sensor;
Repair/replace if needed
● Check indoor EEV; Replace if needed
● Check indoor EEV coil; Replace if needed
● Check indoor blower motor & wiring; Repair/replace if
needed
● Replace control board if necessary
● Check the opening of stop valve, should be full open;
Repair/replace if needed
● Check for restrictions in refrigerant line;
Repair/replace if needed
● Check refrigerant charge level; Adjust if needed
● Test for system leaks using leak test procedure
● Check the connection to low pressure sensor;
Repair/replace if needed
● Check indoor EEV; Replace if needed
● Check indoor EEV coil; Replace if needed
● Check indoor blower motor & wiring; Repair/replace if
needed
● Replace control board if necessary
● Check the opening of stop valve, should be full open;
Repair/replace if needed
● Check the wire between control board and
compressor
● Inspect compressor motor for proper function;
Replace if necessary
● Check outdoor EEV coil connection.
Repair/replace as needed.
● Check the connection to thermistors; Repair/replace
if needed
● Check indoor EEV coil; Repair/replace if needed
● Check indoor EEV; Replace/repair if needed
● Check outdoor EEV coil; Repair/replace if needed
● Check outdoor EEV; Replace/repair if needed
● Check refrigerant charge level; Adjust if needed
●check pressure sensor; Repair/replace if needed
● Replace control board if necessary