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Electronic Control Sequence Of Operation
NOTE
: The GE Vertical Zoneline is operated by a wired remote wall thermostat which is connected to
an electronic control board at the GE Vertical Zoneline.
Compressor and Reversing Valve Control
*The Reversing valve stays in the last state until a call for heat or cooling.
Cooling Mode
Once the ambient temperature rises past the cool demand set point of the thermostat, and if the
compressor is not locked out, the cooling cycle begins. The fan is started 5 seconds prior to the
compressor. Once the ambient temperature has been lowered to the cool set point, the cooling cycle
starts to terminate by shutting off the compressor. After a 30 second delay, the fan is shut off.
Heating Mode Control Operation
There are two heating methods: Heat Pump and Electric Resistance Heat.
There are 2 types of GE Vertical Zonelines that provide heating:
•
Heat Pump with Electric Heat
•
Cool with Electric Heat
Heat Mode in Cool with Electric Heat Zonelines
When the thermostat is in the Heat Mode, if the indoor ambient temperature is below the heat set point
and the compressor is not locked out, then the compressor turns on. If the ambient temperature rises
above the thermostat's heat set point, the compressor turns off.
If the Compressor is Locked Out on the 3 Minute Time Delay and Electric Heat is Available
1. The control turns on the electric heat until the compressor is not locked out.
2. After lockout, the control turns off the electric heat, waits 5 seconds, then turns on the compressor.
(The wired remote wall thermostat's time delay may override this feature).
3. If the outdoor coil temperature sensor drops to 30°F or less for 2 consecutive minutes, the GE
Vertical Zoneline will switch to electric heat (if available). Thereafter, the GE Vertical Zoneline will
switch back to Heat Pump heat until the outdoor coil temperatures sensor rises to 45°F or greater.
Active Mode
Compressor
Reversing Valve State*
Cooling
On
De-Energized
Heat - Heat Pump (Compressor
heat)
On
Energized
Heat Pump Electric Heat
Off
Energized
Heat - Electric Heat / Cool Zoneline
Off
De-Energized
Fan only
Off
*
Содержание GE Vertical Zoneline AZ90E09D C
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