Outdoortemperaturesensor (Select Models); Troubleshooting Guide - Honeywell T8611G Chmnothern IV User Manual

T8611G CHRONOTHERM _ IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS
6. Press the.Run Program key to exit the system-test,
The system-test times out after four minutes
without any key presses.
CHECKOUT
OutdoorTemperatureSensor
(select models)
Allow the outdoor temperature sensor to soak in the
outdoor air for a minimum of five minutes before
taking a reading.
TROUBLESHOOTING GUIDE
Symptom
Display will not
come on,
Pol_ltde Cause
Thermostat is not being
_owere¢l.
Heating will not
come on.
Action
Check for 24 Vac between R and C terminals.
-- If missing 24 Vac:
check if the circuit breaker is tripped---reset the
circuit breaker,
-- check if the system fuse is blown--replace the
fuse.
-- check if the power switch on the HVAC equipment
is in the Off position--set to the On position,
-- check wiring between thermostat and HVAC
equipment--replace any broken wires and tighten
any loose connections.
-- If 24 Vac is present, proceed wffh troubleshooting,
Enter Installer Setup number 37 and reconflgure the display. Temperature Room temperature display has
display is incorrect. :een reconfigured.
Fherrnosttu is configured for °F Enter installer Setup number 14 and reconfigure the display.
3r °C display.
Bad thermostat location. Relocate the thermostat.
Temperature rhe upper or lower temperature Check the temperature setpointa;
settings will not imits were reached, Heating limits are 40 to 90°F (4.5 to 32°C)
change. (Example: Cooling limits are 48 to 99°F (7 to 37°C)
Cannot set the
heating higher or The setpoint temperature range
the cooling lower.) _tops were configured,
No power to the thermostat,
Check InStaller Setup numbers 34 and 35 and reconfigure the
setpoint stops.
Check for 24 Vac between R and C terminals.
-- If missing 24 Vac:
-- check if the circuit breaker is t ripped_reset the
circuit breaker,
check if the system fuse is blown--replace the
fuse.
-- check if the power switch on the HVAC equipment
is in the Off position_sst to the On position.
check widng between thermostat and HVAC
equipment--replace any broken wires and tighten
any loose connections,
--_ If 24 Vac is present, proceed with troubleshooting,
Thermostat minimum off time is Wait up to five minutes for the system to respond.
activated.
System selection is not set to Set system selection to Heat,
Heat.
Heating setpoint is below room Check heating setpoint. Set heating setpoJnt to desired
temperature, temperature,
(Contthued)
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