Groen CC20-E Operator's Manual page 213

SERVICE CODES
Service Code 6
Table 6 provides information for troubleshooting when on a service call. The
columns list probable cause, replacement parts and special tools needed, and a
page reference to the service instructions. Proceed through the Probable Causes
in the sequence shown in the table. If the corresponding Corrective Action does
not correct the problem, proceed to the next Probable Cause and so forth, until the
problem is corrected.
Table 6 - Troubleshooting Service Code 6
Probable Cause
Be sure oven is disconnected from branch circuit power before performing any repair work.
Boiler temperature probe
harness may not be
securely connected to
the control panel.
Boiler temperature probe
Boiler temperature probe
may not be fully inserted
into boiler. Maximum
allowable space between
probe head and
compression nut is 1/2".
For gas units, boiler
temperature probe
harness problem.
Boiler temperature circuit
problem.
When oven power is turned on, there is high voltage present in the electrical components compartment.
Old Electronics Prior to Serial Number GC7243MS.
Solid state controls may
be out of calibration.
Relay board and/or control
panel problem.
Faulty relay board.
Faulty control panel.
6-20
Corrective Action
Check that harness is correctly and
securely connected to boiler temperature
harness on the control panel. See label
on control panel circuit board.
Continually check the probe. Disconnect
the probe from the harness. Remove from
the oven and put in an ice water bath.
If necessary, replace boiler temperature
probe.
Disconnect probe harness from probe and
control panel. Continuity check
harness. Replace harness if an open
circuit is detected.
With probe disconnected from harness,
continuity check harness to ground.
Replace harness if any continuity is
measured.
Disconnect probe from probe harness.
Continuity check probe wires to chassis
ground. If any continuity is measured,
replace boiler temperature probe.
Continuity check between probe wires.
If an open circuit is measured, replace
boiler temperature probe.
Check solid state controls calibration.
Perform relay board power supply check.
Replace relay board or flex cable.
Replace control panel.
Test Equipment
WARNING
————————
Digital ohmmeter
————————
Digital ohmmeter
Digital ohmmeter
Digital ohmmeter
Digital ohmmeter
WARNING
Calibration box,
P/N 074821
Voltmeter
————————
————————
Service
Reference
Location
Page 8-20
Page 8-3
Page 8-15
Pages 2-21
2-22, 3-32,
3-33, 3-34,
4-19, or 5-19
Pages 2-21
2-22, 3-32,
3-33, 3-34,
4-19, or 5-19
Pages 2-21
2-22, 3-32,
3-33, 3-34,
4-19, or 5-19
Pages 2-21
2-22, 3-32,
3-33, 3-34,
4-19, or 5-19
Page 8-1
Page 8-3
Page 8-24
Page 8-23
(Revised 1/02)