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VIII.

Troubleshooting

Control Module

–

Heater Relays

HINT: Occasionally, a heater relay

terminal soldered to a # 266746,

263832 or 264461 control module pc

board can burn

or have insufficient

solder

. If so, do not resolder the

relay, but replace the control

module.

The heater relay is the largest of three

relays in the center

of the pc board & can

be one of two colors:

Black

Orange

HINT: Faulty heater

relays can cause

modules to count down

to “1” and stop.

NOTE: Replace all faulty

control modules and

hold them for (60) days

for possible return for

analysis. Do not

resolder control module

pc boards.

For SHU 430x/53 models, reuse existing jumper (#

167782) for replacement module (SHU 53 shown).

Good board -- showing proper

soldering on back of pc board.

Burned board -- showing burned

terminal on back of pc board.

Bosch SHX46A06 User Manual

Questions and Answers: