WHISPERKOOL TROUBLESHOOTING GUIDE
Unit has ice forming on the evaporator unit
Possible cause
Solution
Evaporat
or filt
er or coil is dirty
Remov
e the filt
er and wash it, then clean the coil with a vacuum.
If coil is very dirty, use a spray bottle with a small amount of liquid
dish detergent or coil cleaner. Spray coil, let set f
or fiv
e minutes, then
flush with fr
esh water.
There is something blocking the supply and/or return air
Remove blockage
The evaporator fan is not turning on
Call a service tech to troubleshoot
The evaporator unit has not gone through an Anti-Frost Cycle yet
Check the coil for surface ice. Melt with blow drier until coil is warm
to the touch. Soak up water with a towel.
If evaporator unit continues to ice
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 air
flo
w is blocked.
Unit does not run/power up
Possible cause
Solution
Evaporator Unit is not plugged in
Make sure the unit is plugged into an outlet
Power switch not on
Turn unit on by pressing the power button on the control
Line voltage rating is incorrect for the system
Check line voltage to make sure there is 110V-120V
Bottle at setpoint
Lower setpoint
Thermostat not calling for cooling
Lower setpoint
Faulty thermostat or wiring
Call Customer Service at 1-800-343-9463
Cellar temperature is too warm
Possible cause
Solution
The temperature of the room to which the condensing unit exhausts
exceeds 110°F
Intake temperature needs to drop below 110°F
The system is undersized for the cellar
Order correct size system
There is something blocking the supply and/or return air on the
evaporator unit or the condensing unit
Remov
e air flo
w obstruction
Evaporator unit is mounted too low in the cellar
Relocate unit so the distance from the ceiling and top of the unit is
no more than 18”
One or more of the fans is not turning on
Please contact the installing technician to troubleshoot
Compressor is not turning on
Please contact the installing technician to troubleshoot
Compressor keeps cycling on overload
Make sure all fans are working and there is no air
flo
w obstruction
Poor seal around door or other areas requiring a seal (around the
unit, wall joints, etc.)
Make sure there are no air gaps around the door. If door seal is
damaged, replace it.
Setpoint too high
Lower the setpoint
Evaporator coil is frosted or iced up
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.
System runs constantly
Possible cause
Solution
Leaky door seal or poorly insulated cellar
Fix leaky door seal and insulate cellar
Page 48
08/04/21
