Fault codes.
Fault Code
Displayed
Condition
Action
F-C
Evaporator Not Frost Free
Call service
F-D
Superheat Too Low
Call service
F-E
Discharge Temperature Above Limit
Call service
F-F
Electronic Expansion Valve Out of Range
Call service
F-6
T5 Ambient Temperature Check
Technician service data
F-I
Refrigerant Leak Test
Call service
F-J
Concurrent Load High Current
F-L
Evaporator Not Defrosting
F2
T2 Tank Temperature Sensor Failure
Call service
F3
Compressor Failure
Call service
F4
Fan Failure
Call service
F5
T3a Sensor (Evap inlet temperature) Failure
Call service
F6
T3b Sensor (Evap outlet temperature) Failure
Call service
F7
T4 Sensor (Compressor outlet) Failure
Call service
F8
T5 Sensor (ambient temperature) Failure
Call service
F9
Lower Heating Element Failure
Call service
FIO
Upper Heating Element Failure
Call service
Fll
DryTank Fault
See page 18
bAd linE
The voltage is too low at power-up
See page 18
(F121
F13
Stuck Key Fault
Call service
Dirty Filter
Filter is dirty
See page 12
IF14)
F15
DataFlash Fault
Call service
F16"
Anode Rod Depleted
Call service, see page lZ_
F17"
Anode Rod Wired Incorrectly
Call service
F18
Current Tansformer Wired Incorrectly
Call service
F19
Low Line Voltage
Technician service data
F20
Condensate Drain Pan Port Clogged
See page !2
F21
Application Update Failure
Call service
F22
Parametric Data Updated Failure
Call service
F23
Micro A/D Failure
Call service
* Some Models
23