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Figure 10 - Pioneer Silver Controller Layout
Sequences of Operation
Supply Fan Operation
Supply fan will enable upon receiving a
24VAC input on the “G” terminal or a call for
compressor operation unless an alarm
prevents the fan from operating. There is a 30
second minimum off timer for the fan. The
supply fan is enabled for 15 seconds after the
last stage of cooling, heating, or
dehumidification stages off. Not all alarms
will prevent supply fan operation.
The alarms that disable the fan are:
1) Emergency Shutdown
2) Condensate Overflow
3) Low Voltage
4) High Voltage
Compressor Operation
The compressor will enable upon receiving a
24VAC input on the “Y” terminal or a
24VAC input on the “TH_NS” terminal if in
night setback mode unless an alarm is active.
If the supply fan was not enabled prior to the
compressor call, then the supply fan will
enable for 5 seconds before the compressor is
started.
The compressor has a minimum on time of 3
minutes and a minimum off time of 2 minutes
to prevent short cycling. These delays can be
shortened to 5 seconds if the controller is in
test mode. If the unit goes into an alarm then
the minimum on time will be ignored and the
compressor will disable. All alarms will
disable the compressor.
Summary of Contents for ProFit WV Series
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