Installer Guide 20
• SYMPTOM: The slide switches on the thermostat are very difficult to move.
CAUSE: The backplate of the thermostat is screwed too tightly into
a wall that is not perfectly flat.
REMEDY: Loosen the screws holding the thermostat into the wall.
• SYMPTOM: The Air Conditioning does not attempt to turn on.
CAUSE: The cooling setpoint is set too high, the Mode Switch is not
set for Cool, or the batteries are too weak.
REMEDY: Consult the Normal Operation section in this manual to:
- Lower the cooling setpoint (Page 6).
- Correct the Mode Switch position (Page 6).
- Replace the batteries (Page 10).
- Adjust the Aux Switch to Normal (page 8) for PSP2100 ONLY.
• SYMPTOM: The fan does not turn on even though the compressor
has energized.
CAUSE: The Fan Switch is not completely in the On or Auto position.
REMEDY: Slide the Fan Switch firmly into the On or Auto position.
• SYMPTOM: Aux Heat does not turn on (PSP2100 only).
CAUSE: The Aux Heat Switch is set for Lockout.
REMEDY: Consult the Aux Heat section of this manual to slide the
Aux Heat Switch to Normal (Page 8).
• SYMPTOM: The Heating does not attempt to turn on.
CAUSE: The heating setpoint is set too high, the Mode Switch is not set for
Heat, or the batteries are too weak.
REMEDY: Consult the Normal Operation section in this manual to:
- Raise the heating setpoint (Page 6).
- Correct the Mode Switch position (Page 6).
- Replace the batteries (Page 10).
7 Troubleshooting
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