Manual Honeywell Chronotherm IV - T8665A (page 42 of 48) (English)

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42 69-1536–3

Troubleshooting (Cont)

Symptom Possible Cause Action

Cooling does not

come on.

System selection is not set to

Cool. Cooling setpoint is

above room temperature.

Check that setpoint is below room temperature.

Check if the circuit breaker is tripped—reset the circuit

breaker.

Check if the fuse at the fuse box is blown—replace the

fuse.

Check if the System switch at the equipment is in the

Off position—set to the On position.

Wait five minutes for the system to respond (thermostat

displays “ Wait”).

Set System selection to Cool.

System on indicator—

for heat, for

cool— is lit, but no

warm or cool air is

coming from the

registers.

Heating/cooling equipment

turns on the fan when the

equipment has reached the

preset time or temperature.

Wait a minute after seeing the or and then

check the registers. If there is no hot or cool air coming

from registers, refer to Heating does not come on or

Cooling does not come on.

Heat or cool turns on

before programmed

time.

Adaptive Intelligent

Recovery™ control is on.

Adaptive Intelligent Recovery™ control brings the heat

or cool on early to meet the temperature set for the

programmed period. See Adaptive Intelligent

Recovery™ control section. To disable Adaptive

Intelligent Recovery™ control, contact your local

Heating and Air Conditioning contractor.

After reseting Thermostat and subcequently selectin :Start progra,it does not kick_in Submitted on 16-10-2023 at 14:09
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Honeywell Chronotherm IV - T8665A Manual

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