GVZC20 Service Manual

SERVICING
52
Upon start up in emergency mode the circuit board may display an “Ed” error. This is an indication that the DIP switches
on the control board need to be congured in accordance with the Electric Heating Airow Table. Conguring the DIP
switches to the unit will clear the error code.
AVPEC25B14 AVPEC37C14 AVPEC59D14 AVPEC61D14 S-9 S-10 S-11 S-12
No Heater ----OFF* OFF* OFF* OFF*
First 3 5 5 5 ON ON ON ON
Second 5 6 6 6 ON ON ON OFF
Third 6 8 8 8 ON ON OFF ON
Fourth 8 10 10 10 ON ON OFF OFF
Fifth 10 15 15 15 ON OFF ON ON
Sixth X 19 20 20 ON OFF ON OFF
Seventh X X X 25 ON OFF OFF ON
Switch Bank DS-3
Indoor Control Board Settings
Heater Kit
Selection
Heater kW Dip Switch Setting
S-21 S-22
OFF* OFF*
ON OFF
OFF ON
ON ON
Emergency Mode
Function
Normal operation
Cooling Emergency mode/Fan only Emergency mode
Heating Emergency mode (High heat level)
Heating Emergency mode (Low heat level)
Switch Bank DS-6
Indoor Control Board Settings
S-1 S-2
ON* ON*
ON OFF
OFF ON
OFF OFF
Cooling Emergency mode (Medium cool Level)
Cooling Emergency mode (High cool level)
Switch Bank DS-2
Outdoor Control Board Settings
Emergency Mode
Function
Normal operation
Cooling Emergency mode (Low cool Level)
NOTE: Default factory settings are marked with *.