TROUBLESHOOTING
49
ClimateTalk
Fault Code
PCB LED
Display
Transmitted ClimateTalk
Message
Thermostat Fault
Probable Causes
Corrective Actions
54
-
EEV MINOR
This error indicates the equipment is
experiencing frequent low discharge
superheat faults.
Control has determined continued
operation is acceptable. This indicates
they may be a problem with the
equipment.
●
Thermistors inoperable or improperly
connected
●
Faulty indoor EEV or indoor EEV coil
●
Faulty control board
●
Check the connection to thermistors; Repair/replace if
needed
●
Check indoor EEV; Replace if needed
●
Check indoor EEV coil; Replace if needed
●
Replace control board if necessary
55
-
HI DIS TEMP MIN
This error indicates the equipment is
experiencing frequent high discharge
temperature faults. Control has
determined continued operation is
acceptable. This indicates they may be
a problem with the equipment.
●
Discharge thermistor inoperable or
improperly connected
●
Discharge thermistor is put on incorrect
position or off
●
Low refrigerant charge
●
Overcharge
●
Faulty compressor
●
Check discharge thermistor resistance and
connections; Repair/replace as needed
●
Check discharge thermistor position
●
Check refrigerant charge level; Adjust if needed
●
Check refrigerant charge level; Adjust if needed
●
Check the compressor; Repair/replace if needed
56
E56
SUCT TEMP FAIL
The control has detected if the Outdoor
Suction Temperature Sensor is out of
range.
●
Suction thermistor inoperable or not properly
connected
●
Check the connection to suction thermistor;
Repair/replace if needed
57
-
CL LOOP SWEAT
This indicates the control is sensing
sweating on the cooling loop.
●
Refrigerant Leak
●
Low refrigerant charge
●
Faulty indoor EEV or indoor EEV coil
●
Thermistors inoperable or improperly
connection
●
Test for system leaks using leak test procedure
●
Check refrigerant charge level; Adjust if needed
●
Check indoor EEV; Replace if needed
●
Check indoor EEV coil; Replace if needed
●
Check the connection to thermistors; Repair/replace
if needed
B0
Eb0
NO ID AIRFLOW
The estimated airflow from indoor
subsystem is near to 0 CFM.
●
Failed indoor blower motor
●
Indoor fan motor not properly connected
●
Too much static pressure
●
Check ID fan motor wiring and connectors;
Repair/replace if needed
●
Check ID fan motor; Replace if needed
B9
Eb9
LOW ID AIRFLOW
Estimated airflow from motor is lower
than the airflow requirement.
●
Failed indoor blower motor
●
Indoor fan motor not properly connected
●
Too much static pressure
●
Check ID fan motor wiring and connectors;
Repair/replace if needed
●
Check ID fan motor; Replace if needed
D0
Ed0
NO NET DATA
Control board does not have the
necessary data for it to properly perform
its functions.
●
Heat Pump is wired as part of a
communicating system and integrated control
module does not contain any shared data.
●
Replace control board if necessary
D1
Ed1
INVALID DATA
Control board does not the appropriate
data needed to properly perform its
functions.
●
Heat Pump is wired as part of a
communicating system and integrated control
module contains invalid shared data or network
data is invalid for the integrated control
module.
●
Replace control board if necessary
D2
Ed2
SYSTEM MISMATCH
The airflow requirement is greater than
the airflow capability of the indoor
subsystem.
●
Heat Pump is wired as part
of a communicating system and outdoor unit
requires airflow greater than indoor unit's
airflow capability
●
Shared data is incompatible the system or
missing parameters
●
Communication wiring has loose connection.
●
Indoor unit without EEV.
●
Verify shared data is correct for your specific model;
Repopulate data if required
●
Check communication wiring. Repair as needed.
11
E11
RUN SYS TEST
This test is required at startup. Installer
should navigate to the ComforrtNet User
Menu, choose Heat Pump, then
EQUIP TEST and SYSYTEM TEST.
Selecting ON will run the required test.
Display will clear once testing is
complete.
●
Incomplete SYSTEM TEST
●
SYSTEM TEST is running
MESSAGE ONLY
Items below are messages only displayed on the thermostat screen.
OUTDOOR UNIT- ERROR CODES
