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49-50300-2 21
Fault Codes
TROUBLESHOOTING
Fault Code
Displayed Condition Action
F-C Evaporator Not Frost Free. Probable refrigerant leak. Call service**
F-D Superheat Too Low. Possible refrigerant leak. Call service**
F-E Discharge Temperature Above Limit.
Possible refrigerant leak.
Call service**
F-F (OHFWURQLF([SDQVLRQ9DOYH2XWRI5DQJH
Probable refrigerant leak.
Call service**
F-G T5 Ambient Temperature Check Technician service data
F-I Refrigerant Leak Test. Probable refrigerant leak. Call service**
F-J Concurrent Load High Current Call service
F-L Evaporator Not Defrosting Call service
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
F10 Upper Heating Element Failure Call service
F11 Dry Tank Fault See page 15
bAd linE
(F12)
The voltage is too low at power-up See page 15
F13 Stuck Key Fault Call service
Dirty Filter
(F14)
Filter is dirty. If fault repeats after clearing, probable refriger-
ant leak.
See page 10
F15 DataFlash Fault Call service
F16* Anode Rod Depleted Call service, see page 11
F17* Empty Tank or 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 10
F21 Application Update Failure Call service
F22 Parametric Data Updated Failure Call service
F23 Micro A/D Failure Call service
* Some Models
**Service technicians should use TB01-16 to check for leaks.
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