About 3 weeks ago, I started receiving an F05 error code after about 2-3 minutes of the wash cycle. Stop and Restart will resume and finish the load. I’ve tested the Heating Element (15 ohms), tested and replaced the Temp Sensor, tested and replaced the Heating Element Relay Solenoid (book says 15 ohms, but both old and new one show about 12 ohms… problem?) I still get the error message. No corrosion noted on any connectors, and same 12 ohm reading is present at the CCU test point (#9) and at the relay itself.
I’ve got decent water flow - hot and cold - and the temp sensor seems to change resistance as it should when the water temp changes (I’ve tested a few random temperatures.)
Suggestions? I’m leaning towards the CCU, but hate to spend the money without some way of testing to see if it’s actually bad!
Well - I’m now at a loss. I’ve replaced the CCU, the temp sensor and the temp sensor relay. The heater element tests fine at a 15 ohms. I’m still getting the F05 error about 3-5 minutes into the cycle. I’m read the manual and studied the schematic - what else could it possibly be? Help!
Well - it figures it would be something simple! I could have sworn I check the temp sensors readings at both the sensor and the CCU. Apparently I did not! As a result, I missed that one of the black wires between the sensor and the CCU was "open." I ran a new wire and spliced it to the connectors at each end and it works like a charm!
Silly rookie mistake that cost me a temp sensor, heater element relay and a CCU! (Anybody want to buy a heater element relay and a "like new" CCU really cheap? :-))
thank you for this post. triple checked ohms and continuity at the heat sensor, wiring harness and control before purchasing parts. also found the problem to be wiring and not the sensor or control unit.