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SYMPTOM
No power to unit
Unit doesn't heat
(HOT Mode)
Food not kept hot enough
(HOT Mode)
Unit doesn't cool
(COLD Mode)
Food not kept cold enough
(COLD Mode)
Tank will not fill
Tank overflows
TROUBLESHOOTING SUGGESTIONS
POSSIBLE CAUSE
Circuit breaker tripped
Selector switch OFF
Selector switch not set to HOT
Insufficient water in tank
Temp control not set high enough Set temp control
Min water level sensor dirty
Hi-limit safety tripped
Internal damage
Food was not pre-heated
Food too thick
Temp control not set high enough Set temp control to desired temp
One hi-limit tripped (7443,
7543 or 7643)
Internal damage
Selector switch not set to COLD
Tank too hot
Condenser cooling louvers or coil
plugged
Internal damage
Food was not pre-chilled
Pan rails set on high position
Condenser cooling louvers or coil
plugged
Refrigerant adjustment needed
Selector switch not set to HOT
Minimum water level sensor dirty
Drain valve open
Internal damage
Maximum water level sensor dirty Clean water level sensors
Internal damage
11
REMEDY
Reset circuit breaker
Set to HOT or COLD
Set to HOT
Be sure drain valve is closed
Allow to fill above min water level
Clean water level sensors
Allow to cool, reset hi-limit
Contact Authorized Wells Service
Agency for repairs
Add only pre-heated food
Stir thick food frequently
Allow to cool, reset hi-limit
Contact Authorized Wells Service
Agency for repairs
Set to COLD
Allow to cool to 100ºF or less
Clean condenser louvers and/or
coil
Contact Authorized Wells Service
Agency for repairs
Add only pre-chilled food
For NSF 7 operation use lower
pan rail supports
Clean condenser louvers and/or
coil
Contact Authorized Wells Service
Agency for repairs
Set to HOT
Clean water level sensors
Be sure drain valve is closed
Contact Authorized Wells Service
Agency for repairs
Contact Authorized Wells Service
Agency for repairs
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