Groen CC20-E Operator's Manual page 234

PROBLEM: OVEN DOES NOT ACHIEVE READY STATUS - (Continued)
Probable Cause
Zero current in any water heating
element circuit. (Continued)
CC20-E
Zero current in any water heating
element circuit.
(Revised 1/02)
TROUBLESHOOTING
Corrective Action
Replace the relay board.
Be sure oven power is off and oven is disconnected from
the power source. Disconnect heating element from har-
ness and continuity check element.
If water heating element is okay, check harness continuity.
If necessary replace defective wire and/or wire terminal. If
element is an open circuit, replace element, P/N:
208V Unit - 080607
240V Unit - 081633
480V Unit - 081634
When oven power is turned on, there is high
voltage present in the electrical components
compartment.
Connect water heating element to the harness, and turn
on oven power. Select Steam mode and check for voltage
at the mercury relay terminal that is connected to the ter-
minal board TB1 (B1-B3) or TB2 (B4-B6). SEE ACTIVE
CIRCUIT DIAGRAMS ON PAGES 3-23 THROUGH 3-25.
Be sure oven is disconnected from branch cir-
cuit power before performing any repair work.
Voltage measured. Continuity check wiring between the
relay and the terminal block. Replace defective wire and/or
wire terminal.
No voltage measured. Check for 24VAC between
mercury relay coil terminals for the relay where the prob-
lem exists. For example, if you are working on a 208 volt
unit and line voltage is missing at TB2 terminals 4 and 5,
measure coil voltage at R2 terminals R2-A and R2-B.
WARNING
WARNING
7-13