BASIC TROUBLESHOOTING
No LCD display
Remove thermostat from subbase and check for 24 Volts
across ‘24’ and ‘24C’. Make sure the factory jumper is between
‘R’ and ‘24’. If no voltage, check voltage at HVAC system
terminals ‘R’ and ‘C’. If no voltage, fault is equipment related. If
voltage, fault could be in wiring.
Thermostat can not be set
In the Advanced Installer menu, set FN=A for auto changeover.
for auto changeover
FN=C is for cooling only.
FN=H is for heating only.
FN= . . . is for manual heat / cool changeover.
Temperature display
Air from the wall cavity may be leaking into the rear of the
inaccurate.
thermostat. Seal holes in the wall to prevent air infiltration. The
temperature sensor might be folded back inside the thermostat
and is not being exposed to the room temperature. Carefully
SYMPTOM
POSSIBLE FAULT AND REMEDY
move
the sensor head so that it is just behind the sensor opening in the case.
External influence from appliances, lighting or drafts may be
affecting temperature accuracy. Move lamps or other sources of
abnormal temperature influence away from the thermostat.
Wrench icon flashes on LCD
This is not a fault. Commissioning mode is enabled and
time delays are overridden. Change CD=1 to CD=0 in the
Advanced Installer menu.
Outdoor temperature does not
Check wiring to outdoor sensor. Make sure that TT=OA in
display. Dashes (- - -) appear
the Advanced Installer menu.
on the LCD.
Heating or Cooling is flashing
This is not a fault. The thermostat is in the short cycle protection
mode. This prevents the equipment from running for
4 minutes after the thermostat calls.
Lock icon flashes when trying
This is not a fault. HL and CL restrict the heating and cooling
to set a higher heating or
setpoints. The limit values can be changed in the Advanced
lower cooling temperature.
Installer menu.
Thermostat displays wrong
The T-32-P can display in either Fahrenheit or Celsius. Change
temperature
CF=C or F in the Advanced Installer menu.
The fan continues to run after
The thermostat is set to Fan On. Set thermostat to Auto Fan.
a heating or cooling call is
The fan purge mode is set to run the fan for a fixed period of
satisfied.
time after the equipment shuts off. Change the FP value in the
Advanced Installer menu.
Some buttons on the
Lock values have been set. Refer to LC settings in the
thermostat do not function.
Advanced Installer menu.
Thermostat clock does not
Make sure that the plastic tab on the internal fitted battery is
keep proper time.
removed so that the battery is operational.
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