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TROUBLESHOOTING GUIDE
SYMPTOM
CAUSE
CHECK/CORRECTION
Unit does not properly
control room temperature,
runs continuously, or causes
abnormal cycles in heating
or cooling mode.
Sleeve seals worn or missing allow-
ing outdoor air to be passed over the
thermostat-sensing bulb.
Inspect and replace if necessary.
Defective thermostat.
Test and replace if necessary.
Thermostat bulb not properly located.
Ensure bulb is placed in return air stream.
Compressor short cycles.
Low voltage.
Check voltage with unit running and ensure it is within
nameplate limits.
Restricted condenser air.
Check for dirt or other condenser coil restriction. Clean as
necessary.
Recycling of condenser air.
Check for inadequate discharge air installation clearances.
Coil not sealed against grill. Unit may not be completely
pushed into sleeve.
Condenser fan motor operating inter-
mittently, rotating slowly or not at all.
Check free rotation of motor shaft. Check voltage to the
motor. Check motor capacitor. Check for miswiring.
Motor may be seizing internally. Motor may have open
windings, if so, replace motor.
Summary of Contents for EZ Series 25
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