TR
OUBLE
SHOO
TING
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
•
21
DISPLAY SHOWS
INDICATES
CORRECTIVE ACTION
EPL
Power supply voltage is too low.
Check the power supply to the unit and make sure it is higher
than 187V. For further information refer to “Step 11:”.
EDH
Heat Pump Discharge
Temperature is too high.
Contact a qualified technician to service the unit.
EoF
(If Accessory Condensate
Pump is installed)
Condensate pump failure.
1. Check to see if accessory condensate pump is plugged in
and has power. Also check circuit breaker/fuse box and
GFCI (if used). If error persists, proceed to the next step.
2. Check condensate pump outlet tube for blockage. If
error persists, proceed to the next step.
3. Check control wire connections to condensate pump. If
error persists, proceed to the next step.
4. Replace accessory condensate pump. If error persists,
contact a qualified technician to service the unit.
ECL
Heat pump suction pressure is
too low.
Contact a qualified technician to service the unit
EEE
EEPROM failure
ECC
Heat pump compressor is not
functioning.
ECE
Power supply error.
NOTE:
The diagnostic codes listed above are the most common. If a diagnostic code not listed above is displayed,
contact Residential Technical Assistance referencing the number on the front of this manual.
DIAGNOSTIC CODES
