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G. Error Codes
When the control board detects an error, the display shows one of the following error
codes in the display mode. Error codes other than E1 and E2 are displayed as "EE" at
the time of occurrence. To see the actual error code, see the error log.
1. With the unit on, press and hold the "SERVICE 1" button for 3 seconds. Display changes
to "n1".
2. Use the "SERVICE 1" and "SERVICE 2" buttons to move through the list until "h4" is
displayed.
3. Press the "RESET" button to view the error log. Displays up to 5 errors with the most
recent error rst.
4. Press the "RESET" button to return to list. To clear error log history, press and hold the
"SERVICE1" and "SERVICE 2" buttons simultaneously for 5 sec.
5. Display returns to normal if no buttons are touched for 20 sec.
Error Codes
Error
Code
Problem Corrective Action/Reset Details
E1
Freeze Cycle Backup Timer
Freeze cycle backup timer (Control Board Setting
6) has terminated.
45 min. after water tank starts to close in
preceding harvest cycle, unit stops if the
evaporator temperature is above 32°F (0°C).
Check for inlet water valve leaking by, hot gas valve
leaking by, pump motor not pumping, thermostatic
expansion valve not feeding properly, low charge, or
inefficient compressor.
Press the "RESET" button to reset.
E2
Harvest Cycle Backup Timer
Harvest cycle backup timer has terminated.
30 min. after water tank starts to open in harvest
cycle, unit stops if harvest cycle termination
temperature (Control Board Setting 1) has not
been reached.
Check for open thermistor, HGV not opening, TXV
leaking by, low charge, or inefficient compressor.
Press the "RESET" button to reset.
EE
(E3)
Water Tank Opening Backup Timer
3-minute opening backup timer starts when water
tank starts to open.
If actuator motor's internal position sensor
does not indicate water tank is fully open within
3minutes, display shows "EE" and unit stops for
60 minutes.
If error recurs after unit resumes operation,
display shows "EE" and unit shuts down.
Check actuator motor and control board.
Press the "RESET" button to reset.
EE
(E4)
Water Tank Closing Backup Timer
3-minute closing backup timer starts when water
tank starts to close.
If actuator motor's internal position sensor does
not indicate water tank is fully closed within
3minutes, display shows "EE" and unit stops for
60 minutes.
If error recurs after unit resumes operation,
display shows "EE" and unit shuts down.
Check actuator motor and control board.
Press the "RESET" button to reset.