Wine Guardian Wine Cellar Cooling Systems 50Hz (WG 175) - Manual (Page 49)

Unit is Operating and Blows Evaporator Air, but the Supply Air is
Not Colder Than the Return Air from the Cellar
Possible Cause Solution
Thermostat not set up properly Check thermostat setup in the manufacture’s
thermostat guide
Compressor not operating High pressure switch open (button up) (see
below)
Condenser airflow is blocked Remove blockage
Clean filter and coil (if needed)
Head Pressure (HP) switch is open Reset HP switch See reset instructions on
page 49
Cellar Temperature too cold (below 11°C) when unit is running
Possible Cause
Solution
Thermostat set too low on cooling Reset thermostat to higher cooling
temperature
Heating coil (optional) not operating Check for temperature rise across coil
Thermostat set too low on heating Reset thermostat to higher heating
temperature
Thermostat not controlling temperature Thermostat mounted in bad location
Cellar Temperature is too cold (below 11°C) when unit is not running
Possible Cause
Solution
Too much heat loss to adjacent spaces
Increase insulation around the ductwork
Check and clean filter and coil
Coil frozen – shut off unit for two hours
Cellar loads are too high Install additional insulation
Replace with larger sized unit
Problems Controlling Cellar Temperature
Problems are occurring even though the unit seems to be fully operational –
evaporator fan blows air into the cellar and compressor and condenser fan runs.
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