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Cascade TEK 5245-A NE Elam Young Parkway Hilllsboro Oregon 97124
Toll Free 888-835-9250 503-648-1818 FAX 503-648-1798 info@cascadetek.com www.cascadetek.com
REV 01.08
14
Section 8
TROUBLESHOOTING
TEMPERATURE
Temperature too high
1/ Controller set too high-see section 6.3
2/ Controller failed on – call Customer Service.
3/ Wiring error – call Customer Service.
Display reads "HI" or "400"+
Probe is unplugged, is broken or wire to sensor is broken – trace
wire from display to probe; move wire and watch display to see
intermittent problems
Temperature too low
1/ OTP limit set too low – see section 6.4.
2/ Controller set too low – see section 6.3.
3/ Unit not recovered from door opening – wait for display to stop
changing.
4/ Unit not recovered from power failure or being turned off –
ovens will need several hours to warm up and stabilize.
5/ Element failure – compare current draw to data plate.
6/ Controller failure – call Customer Service.
7/ OTP limit failure – confirm with front panel lights that Safety
Thermostat is operating correctly. See Section 7.4
8/ Wiring problem – check all functions and compare wiring to
schematic in section 13.0 - especially around any areas recently
worked on.
9/ Loose connection – check control panel for loose connections.
Display reads "LO"
1/ Bad probe or disconnected – call Customer Service.
2/ If ambient temperature is lower than range of unit – compare
set points and ambient temperature to rated specifications in
section 12.0.
Unit will not heat over a
temperature that is below set point
1/ Confirm that fan is moving and that amperage and voltage
match data plate – check for air movement in chamber.
2/ Confirm that set point is set high enough –turn Safety
Thermostat all the way clockwise and see if OTP light comes on.
3/ Check connections to sensor.
Unit will not heat up at all
1/ Check amperage – amperage should be virtually at maximum
rated (data plate) amperage.
2/ Do all controller functions work?
3/ Is the Safety Thermostat set high enough? – for diagnostics,
should be fully clockwise with the OTP light never on.
4/ Has the fuse/circuit breaker blown?