Venstar T1100REC - Manual (Page 17)

TROUBLESHOOTING
SYMPTOM: When using 4 wires (R, G, W, Y),
the air conditioning or heating equipment
tries repeatedly to turn on, but cannot.
CAUSE: There is not enough power available
to "power share".
REMEDY: Connect a 250 ohm, 10 watt power
resistor at the furnace as shown below.
R G W Y C
TR300-10w
R G W Y C
TR300-10w
For Problem A/C
Note: 2 resistors may be used at the same time.
Not applicable with Heat Pump systems.
For Problem Heat
SYMPTOM: The air conditioning does not
attempt to turn on.
CAUSE: The compressor timer lockout may
prevent the air conditioner from
turning on for a period of time.
REMEDY: See page 13 of the Thermostat
Manual and configure step 8 to defeat
the 5-minute compressor lockout.
SYMPTOM: The display is blank.
CAUSE: Lack of proper power.
REMEDY: Make sure power is turned on to
the furnace and 24vac exists between
R & W. If C is used, 24vac between R & C.
Page 16
HEAT
COOL
FAN
POWER
HEAT
COOL
FAN
POWER
HEAT
COOL
FAN
POWER