Page 48 | 1-800-343-9463
WCM
033114
TROUBLESHOOTING GUIDE
Unit has ice forming on the evaporator
Possible Cause
Evaporator filter or coil is dirty.
There is something blocking the supply and or return air.
The evaporator fan is not turning on.
The evaporator unit has not gone through its anti-frost
sequence yet.
If evaporator unit continues to ice.
Unit does not run/power up
Possible Cause
Evaporator unit is not plugged in.
Power switch not on.
Line voltage is incorrect rating for the system.
Bottle at set point.
Thermostat not calling for cooling.
Faulty thermostat or wiring.
Cellar temperature is to warm
Possible Cause
The temperature of the room condensing unit is exhausting
and has exceeded 110
°
F
The system is undersized for the cellar.
There is something blocking the supply and/or return air
on evaporator or condenser side of the unit.
Evaporator unit is mounted too low in the cellar.
One or more of the fans are not turning on.
Compressor is not turning on.
Compressor keeps cycling on overload.
Poor seal around door or other areas requiring a seal
(around the unit, wall joints, etc.).
Controller set too high.
Evaporator coil is frosted or iced up.
System runs constantly
Possible Cause
Leaky door seal or poorly insulated cellar.
Solution
Remove the filter and wash, then clean the coil with a vacuum.
If coil is very dirty, use a spray bottle with a small amount of liquid
dish washing detergent or coil cleaner. Spray coil, let set for 5 min,
then flush with fresh water.
Remove blockage.
Call a service tech to troubleshoot.
Check for ice in the depth of the coil. Melt with blow drier until
coil is warm to the touch. Soak up water with a towel.
Observe ice formation pattern. If only part way up the coil face,
the system could be low on refrigerant. If all the way up, the coil
may be dirty or airflow is blocked.
Solution
Make sure the unit is plugged into an outlet.
Turn unit on by pressing the power button on the control.
Check line voltage to make sure there is 110v/120v.
Lower set point.
Lower set point.
Call Customer Service at 1-800-343-9463
Solution
Intake temperature needs to drop below 85°.
Order correct size system.
Remove air flow obstruction.
Relocate unit so the distance from the ceiling and top of the
unit is no more than 18”.
Please contact the installing technician to troubleshoot.
Please contact the installing technician to troubleshoot.
Make sure all fans are working and there is no airflow obstruction.
Make sure there are no air gaps around the door. If door seal is
damaged, replace it.
Lower the set point.
Observe ice formation pattern. If only part way up the coil face,
evaporator unit could be low on refrigerant. If so, contact your
installing technician to assist with troubleshooting.
Solution
Fix leaky door seal and insulate cellar in accordance with this
manual. (Page 10)
