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SYMPTOM: When using 4 wires (R, G, W, Y),
the air conditioning or heat equipment tries
repeatedly to turn on, but cannot. At
times the display dims or disappears.
CAUSE: There is not enough power available
to "power share".
REMEDY: Connect a 270 ohm, 10 watt power
resistor at the furnace as shown below.
ForProblemA/C ForProblemHeat
•
SYMPTOM: The air conditioning does not
attempt to tum on.
CAUSE_."The compressor timer lockout may
prevent the air conditioner fTom
turning on, for a period of time.
REMEDY: Consult the Owner's Manual in
the Setup section to defeat the
cycles per hour and compressor
timeguard.
SYMPTOM: The display is blank.
CAUSE: Lack of proper power.
REMEDY: Make sure power is turned on to
the furnace and that you have 24vac
between R & W. If C is used, 24vac
between R & C.
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