Service Mode - GE AZ45E07EA Series Technical Service Manual

Service Mode

While Zoneline is in OFF mode, press and hold the
"+" and "-" buttons simultaneously with the AUX SET
button to enter into this mode.
All LED's light up to indicate entered into mode.
These modes can entered even if the Zoneline is in
class 2 mode.
Service Mode times out after 15 minutes of
inactivity.
Minimum run times are not applicable in this mode.
Compressor delay start times in service mode shall
be 10 minutes.
NOTE: Fault codes are stored in this mode but do
not intervene with the Zoneline operation.
Press the Mode button to cycle through the run
modes.
AZ4500
1. "CL": Cooling. Compressor, Indoor Fan, and
Outdoor fan are energized. Fan speed is high.
2. "EH": Electric heat. Electric heater (all relays) and
Indoor Fan are energized. Fan speed is high.
3. "IF": Indoor Fan only. Indoor fan is energized. Fan
speed is high.
4. "OF": Outdoor Fan only. Outdoor fan is energized.
Fan speed is high.
5. "S1": Indoor Ambient Air Thermistor -
temperature will be displayed between -9°F and
99°F on screen after the Zoneline has been in
this mode for 10 seconds. (If no thermistor is
detected, "--" will be displayed).
6. "S2": Indoor Coil Thermistor - temperature will
be displayed between -9°F and 99°F on screen
after the Zoneline has been in this mode for 10
seconds.
7. "S5": Indoor Outlet Air Thermistor – temperature
will be displayed between -9°F and 99°F.
8. "UI": UI Test - Run the LED test sequence.
9. "So": Software version is displayed.
Service Mode
AZ6500
1. "CL": Cooling. Compressor, Indoor Fan, reversing
valve, and Outdoor fan are energized. Fan
speed is high.
2. "HP": Heat Pump. Compressor, Indoor Fan, and
Outdoor fan are energized, reversing valve is not
energized. Fan speed is high.
3. "EH": Electric Heat. Electric heater (all relays) and
Indoor Fan are energized. Fan speed is high.
4. "IF": Indoor Fan only. Indoor fan is energized. Fan
speed is high.
5. "OF": Outdoor Fan only. Outdoor Fan is energized.
Fan speed is high.
6. "IC": ICR Pump - Pump only is activated. If
equipped.
7. "dE": Defrost - Reverse cycle defrost (cooling
without any fans) is activated to melt ice on
outdoor coil.
8. "S1": Indoor Ambient Air Thermistor -
temperature will be displayed between -9°F and
99°F on screen after the Zoneline has been in
this mode for 10 seconds. (If no thermistor is
detected, "--" will be displayed).
9. "S2": Indoor Coil Thermistor - temperature will
be displayed between -9°F and 99°F on screen
after the Zoneline has been in this mode for 10
seconds.
10. "S3": Outdoor Air Thermistor - temperature will
be displayed between -9°F and 99°F on screen
after the Zoneline has been in this mode for 10
seconds.
11. "S4": Outdoor Coil Thermistor - temperature will
be displayed between -9°F and 99°F on screen
after the Zoneline has been in this mode for 10
seconds.
12. "S5": Indoor Outlet Air Thermistor – temperature
will be displayed between -9°F and 99°F.
13. "Ui": UI test - Run the LED test sequence.
14. "So": Software version is displayed.
– 52 –