t
rouBleShootIng
ClimateTalk
PCB LED
Transmitted ClimateTalk
Fault Code
Display
Message
26
e26
PreSSUre SenSor
28
e28
coil teMP fAil2
29
e29
liQ teMP fAil
30
e30
od ctrl fAil3
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
Thermostat Fault
The control determines that the
• Low pressure sensor inoperable or not
pressure sensor is not reacting
properly connected
properly.
The control has detected that the
• Outdoor coil thermistor inoperable or not
Outdoor Coil Temperature Sensor is
properly connected
out of range.
The control has detected that the
• Liquid thermistor inoperable or not prop-
Liquid Temperature Sensor is out
erly connected
of range.
• Wiring to control board disconnected
Indicates the control board may
• Faulty control board
need to be replaced.
• Electrical Noise
This error indicates the equipment
• Ambient air conditions too high
is experiencing high temperature
• Stop valve not completely open
faults on the outdoor control board.
This error indicates the equipment
is experiencing high temperature
faults on the outdoor control board.
• Ambient air conditions too high
Control has determined continued
• Stop valve not completely open
operation is acceptable. This indi-
cates they may be a problem with
the equipment.
• Current spike in supply
Board detected a high current con-
• Stop valve not completely open
dition. This indicates the potential
• The compressor wire is lost phase
for a short circuit.
• Faulty control board
• Faulty compressor
• Short circuit condition
• Stop valve not completely open
Board detected a high current
• Overcharge
condition.
• Faulty control board
• Faulty compressor
• Blocked/restricted condenser coil and/
The control encountered an abnor-
or lines
mal condition during the startup
• The compressor wire is lost phase
procedure.
• Inconsistent compressor load
• Faulty control board
Indicates the control board may need
• Outdoor fan motor not connected properly
to be replaced.
• Faulty control board
• High or low voltage from supply
The control has detected a voltage
• The compressor wire is lost phase
related issue with the compressor.
• Faulty control board
• Thermistors inoperable or improperly
Indicates the control board may need
connected
to be replaced.
• Faulty control board
Control determines that its compres-
• Memory card not correct
sor requirement is different than the
• Control board mismatch
compressor capability.
• Refrigerant leak
The control has detected a low
• Low refrigerant charge
refrigerant condition.
• Thermistors inoperable or not properly
connected
Control detects a low power supply
• Low line voltage supply
voltage condition.
Control detects a high power supply
• High line voltage supply
voltage condition.
The control detects the outdoor
temperature outside recommended
• Ambient air conditions too high or low
operational range. Unit may continue
to operate normally.
The control is unable to start the
Cooling mode test because indoor
• Heat provided by secondary heating
heat has been turned on by ther-
source
mostat. Please set thermostat to off
position.
Probable Causes
• Check the connection to low pressure sensor; Repair/
• Check the connection to OD coil thermistor; Repair/
• Check the connection to liquid thermistor; Repair/replace
• Check wiring to control board; Repair as needed
• Replace control board if necessary
• Cycle power; re-try during usable ambient temperature
• Check grease applying condition
• Check screw tightening condition
• Cycle power; re-try during usable ambient temperature
• Check grease applying condition
• Check screw tightening condition
• Check power supply for in-rush current during start-up or
• Check the opening of stop valve, should be full open;
• 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;
• 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;
• Replace control board if necessary
• Correct low/high line voltage condition; Contact local utility
• Check the wire between control board and compressor
• Replace control board if necessary
• Check the connection to thermistors; Repair/replace if
• Replace control board if necessary
• Check memory card data vs. air conditioner model
• Verify control board size vs. air conditioner model; Re-
• Test for system leaks using leak test procedure
• Check refrigerant charge level; Adjust if needed
• Check the connection to thermistor; Repair/replace if
• Check circuit breakers and fuses; Replace if needed
• Verify unit is connected to power supply as specified on
• Correct low line voltage condition; Contact local utility if
• Verify unit is connected to power supply as specified on
• Correct high line voltage condition; Contact local utility if
• Cycle power; re-try during usable ambient temperature
• Turn off Furnace or heater using thermostat before
37
37
Corrective Actions
replace if needed
replace if needed
if needed
range
range
steady state operation
Repair/replace if needed
Repair/replace if needed
Repair if needed
if needed
needed
place control board if necessary
needed
rating plate
needed
rating plate
needed
range
operation