Troubleshooting Chart - Welbilt Frymaster UHCTHD Original Instructions Installation, Operation And Maintenance Manual

Troubleshooting Chart

Problem
Cabinet not running
Display has cross hatch in heating
zone/disabling timer
Section 5
Troubleshooting
Cause
Fuse blown or circuit breaker tripped.
Power cord unplugged.
Main power switch turned off.
Heating pad connector is loose.
Heating pad has failed.
Heating pad I/O circuit board is defective.
RTD wire connections are defective.
Shorted RTD wire to chassis.
Open RTD wire.
Correction
Replace fuse or reset circuit breaker.
Plug in power cord.
Turn main power switch on.
Replace heater pad.
Replace heater pad.
Replace I/O board.
Replace heater pad.
Replace heater pad.
Replace heater pad.
5-1