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TROUBLESHOOTING & SERVICE
FOR PERSONAL SAFETY, ALWAYS DISCONNECT THE POWER BEFORE
SERVICING.
If the unit fails to operate as specified, review the following
troubleshooting suggestions prior to calling customer service.
TEMPERATURE
Temp-
1
Temperature too high
1/ controller set too high-see your Watlow users
manual
2/ controller failed on Ð call Customer Service
3/ wiring error Ð call Customer Service
Temp-
2
Chamber temp spikes
over set point and
then settles to set
point
Recalibrate Ð see Watlow users manual
Temp-
3
Temperature too low
1/ high limit set too low Ð see section 7.4
2/ controller set too low Ð see Watlow users manual
3/ unit not recovered from door opening Ð wait for
display to stop changing
4/ unit not recovered from power failure or being
turned off Ð ovens will need several hours to warm up
and stabilize
5/ element failure Ð call Customer Service
6/ controller failure Ð confirm with front panel lights
that controller is calling for heat
7/ high limit failure Ð confirm with front panel lights
that High Limit is operating correctly
8/ wiring problem Ð check all functions and compare
wiring to owners manual - especially around any areas
recently worked on
9/ loose connection Ð check shadow box for loose
connections
Section
9
