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Microwave circuit, Microwave circuit defective messages – TurboChef Technologies C3/CMulti User Manual

Page 85

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Microwave Circuit

9-5

Microwave Circuit Defective Messages

SELF TEST

WHILE COOKING

CAUSE

CORRECTIVE ACTION

LOW MAG CURR

*HV BREAKDOWN

F3 MAG CURR

* European ovens
only

LOW MAG CURR

*HV BREAKDOWN

F3 MAG CURR

Note:

If this message is
detected while
cooking it will
terminate cook
cycle immediately.

Oven CT1 (computer board
current sensor) did not
detect

current

to

the

magnetron transformer.

Notes:

1) Magnetron must be ON
to detect current in circuit.

2) If main circuit breaker
keeps tripping for no
apparent reason, check hi-
limit switch, monitor relay,
heater, mag ssr operation.

1. Check main internal circuit
breaker. .If tripped, check the
following operation:

a) Cook Door Switch

Misalignment (Chpt. 7)

b) Magnetron transformer

(Page 9-8)

c) Hi limit switch (Page 8-2)

d) Heater Failure (Page 8-2)

e) Shorted diode

2. Check operation of the monitor
relay (door operation).

3. Check input current to K4-1
wire. Microwave circuit measures
approximately 9 Amps. If higher
than 15A replace anode
transformer (See 9-8).

4. Check diode

5. Check capacitor

6. Check magnetron

7. Check ssr operation

8. Filament Transformer

9. Current Transformer on

computer board. See Page 6-
10

MAG OVER TEMP

F5 MAG TEMP

MAG OVER TEMP

F5 MAG TEMP

Note: If this
message is
detected while
cooking it will
terminate cook
cycle immediately

Oven software detected
Magnetron thermostat
open. Implying the
magnetron case
temperature is above 212˚F
(100˚C), therefore opening
switch and canceling
magnetron operation or
loose connection.

1. Check Magnetron Thermostat
for loose wires.

2. Check for proper operation of
magnetron blower (Note:
Magnetron fan only operates only
when magnetron is energized and
remains on for 3 minutes after
magnetron is turned off).

3. Check for loose wiring in the
circuit.

4. Check magnetron fan relay for
proper operation.

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