Siemens Dishwasher User Manual download pdf (Page 56)

2nd Edition/Revision 3 (3/4/04)

Service Tips

Modules Displaying “1”

Occasionally dishwashers will run for hours, not finish washing & show a “1” in the display.

This means the module has timed out due to an unidentified heating problem -- all heating

related parts must be checked until the problem is found.

IMPORTANT:

Whenever a “1”

shows in the

module display,

the module must

be reset (after the

heating problem

has been fixed)

by running the

dishwasher. The

module resets

after the 1

run.

NOTE: The heating problem

must

be fixed before the

module will reset and stop

showing a “1” in the display.

HINT: Check module heater relays, wire

harnesses / connections & heaters before

checking NTC’s, flow switches & high limits.

Has dishwasher

stopped

washing and is

showing a “1”

in the display?

If no, module is

working fine.

If yes, control module

has timed out showing

there’s an unidentified

heater problem.

Have these

parts been

checked??

NTC

(~ 55kΩ

@72ºF)

Heater

(~ 11Ω)

Control

module

(heater

relay)

High Limit

(~ 0.3Ω)

Flow Switch

(~ 0.4Ω)

Wire

Harness

START

YESNO

Replacing heaters also

replaces NTC’s, flow

switches & Hi-Limit’s.

Replacing NTC’s

also replaces Hi-

Limit’s.

If flow switch is OK &

water doesn’t flow,

check circulation pump.

Circulation

pump (~ 10Ω)

3-winding circulation pumps can measure ~

Ω

or 9.4

Ω

, depending on motor starter.

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Siemens Dishwasher User Manual Page 56

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