Comfort Stat CDT901 - Manual (Page 102)

CDT900 Series Touchscreen Programmable Thermostata
Table 14. Troubleshooting. (CONTINUES)
Symptom Possible Cause Action
Cannot set the system setting to Heat.
System Type (Installer Setup Number
0170) is set to Cool Only.
Set System Type (Installer Setup
Number 0170) to match the installed
heating and/or cooling equipment.
Cannot set the system setting to Cool.
System Type (Installer Setup Number
0170) is set to Heat Only or Heat Only
with Fan.
Set System Type (Installer Setup
Number 0170) to match the installed
heating and/or cooling equipment.
Heat On is not in the display.
System setting is not set to Heat and/or
temperature setting is not set above
room temperature.
Set the system setting to Heat and set
the temperature setting above the room
temperature.
Cool On is not in the display.
System setting is not set to Cool and/or
the temperature setting is not set below
room temperature.
Set the system setting to Cool and set
the temperature setting below the room
temperature.
Wait is in the display. Compressor minimum off timer is active.
Wait up to five minutes for the cooling or
heating (heat pump) equipment to turn
on.
Screen Locked appears on the screen
and all or some of the keys do not
respond.
The keypad is fully or partially locked.
Check Installer Setup Number 0670 to
change keypad locked options.
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