Steam Oven Diagnostics; Oven Light Diagnostics - Thermador Pro Grand Next Generation PRD48JDSGC/02 Service Manual

Service Manual for the Thermador Pro Grand Next Generation, Dual Fuel Range with Steam Oven, Models: PRD48JDSGC/02, PRD48JDSGU/02

4.4 Steam Oven Diagnostics

The following diagnostics chart contains some common
troubleshooting procedures for the steam oven:
Steam Oven Diagnostic Action
Problem
1. Check if inner door
Leaking or dripping
drip tray is full with
occurs when door
water.
is open
1. Check if the seal is
Door not sealing
wavy or gapping.
properly
2. Check if there is
build-up on the
door (such as
around door frame
perimeter).
3. Check if the door is
closing fully.
1. Check if the vent
Too little or no
system is plugged
water in the steam
or clogged.
tray
2. Check if the
solenoid is
receiving power.
3. If solenoid is not
receiving power, is
there power at the
control board?
1. First check if the
Too much water in
range is in
the steam tray
cooking mode or
standby mode.
2. If in standby mode,
is solenoid
powered?
3. If in standby mode,
is solenoid stuck
or not closing?
4. If in cooking mode,
does air leak into
the sealed tubing?
58300000163852_ARA_EN_C
If YES, then: If NO, then:
Steam forms on the
door and drips when
the door is opened.
Some minor dripping
is normal during
operation.
Replace the seal.
Clean the door.
Replace hinges (but
not if only symptom is
condensation on the
knobs).
Remove debris / clog.
Replace the solenoid.
Replace the control
board for the steam
oven if necessary.
Replace the steam Trace electrical for
oven's control board short circuit.
if necessary. Replace solenoid.
Replace the solenoid.
Make sure the seals
are closed and all
tubes are properly
attached.
Steam Oven Diagnostic Action
Problem
N/A
Condensation on
the knobs
1. Check if steam
No steam in the
cavity temperature
cavity
is above 212° F.
2. Does water boil
within 5 minutes of
the start of the
cycle?
1. Check if the steam
Water not boiling
generator element
is operating.
2. If the steam
generator is not
operating, is the
connection ok
from the relay (on
the steam oven
control board) to
the steam
generator
element?

4.5 Oven Light Diagnostics

To diagnose problems with the oven light in both the steam and large
oven cavities, see Oven Light Diagnostics (Figure 14, page 23). Also
see Oven Lamp Transformer Removal and Replacement, page 85).
If YES, then: If NO, then:
Condensation on
knobs is normal. As
the unit vents warm
steam, some water
will condense on the
(cool) knobs.
Open door to cool the Verify if the steam
glass. When the door generator is
is closed water operating.
should condense on
the cooled glass.
For normal operation, Verify if the steam
boiling has a generator is
cyclically cycle, operating.
according to the
setting and the oven
humidity.
For normal operation, Go to the next step
boiling has a (step 2).
cyclically cycle,
according to the
setting and the oven
humidity.
Replace the control Replace the steam
board for the steam generator element.
oven if necessary.
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