Completing A Service - Fisher & Paykel DishDrawer DD247 Service Manual

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Fault Code EC - Communications Fault
Check the harness connections between the mains filter board and both controllers for signs of any
water damage, corrosion or arcing. Replace if damaged.
If the problem persists replace the mains filter board
If the problem persists replace the top controller
If the problem persists replace the bottom controller.

7.2 Completing a Service

At the end of every service the following procedure should be followed to ensure the fault has been
repaired, and the product is fully operational for the customer.
After replacing any component, run each hardware output individually for at least 10 seconds in
diagnostic hardware output mode (HO) refer to p30 & 31 for the list of output devices.
If a long low tone is played at 1 second intervals, then the device being tested is faulty and should be
replaced.
Running the outputs in the following order is recommended:
Fill Valve
1.
Lid Actuators
2.
Solenoids
3.
Rinse aid pump
4.
Detergent diverter
5.
Water softener bypass valve (if fitted)
6.
Water softener brine pump (if fitted)
7.
Wash motor
8.
• Do not run the wash pump with no water or lid not sealed on the tub. The wash pump will not operate with the tub
in open position.
Drain pump
9.
Heater plate
10.
• Do not operate the heater plate without water present covering the heater plate. It is recommended to have at
least 2.5 l (.6 gal) of water in the tub.
Run a fast test cycle.
11.
Note:
When operating the rinse aid pump in diagnostics, rinse aid will be dispensed. If the testing
is performed several times, rinse aid can build up inside the tub, and foaming may occur. It is
recommended that any excess rinse aid should be removed from the tub before completing any
service.