Forum Replies Created
-
Posts
-
Re: Whirlpool ADG957 fault
My wife has been battling with the service engineer for three months now and finally the service company has decided to refund the contract.
We have a whirlpool adg957 appoximately 7 years old and it has been giving error beeps and stopping the program after about 15 minutes. I have seenthe posts about the NTC feeler on several sites but I don’t think that is quite it.
The service engineer who diagnosed the problem and decided that the machine was beyond economical repair changed the top circuit board and then decided that the fault was with the bottom board and therefore beyond economical repair. Once the funds were replaced I decided to have a go at it. I removed the ntc feeler and stuck it in a glass of hot water with my meter (ohmes) attached, the resistance seemed to go down as the device heated up. Without any reference to work from it looked to me like it was working but I bought a new one and fitted it just in case. I then thuoght to myself that the logic behind the ntc working was to detect if the water was heating up or not, so I then measured the voltage going to the water heater, it measured 240 on both wires so to me it seemed to be open circuit somewhere. On closer inspection of the bottom circuit board I noticed that there was a 12v relay so I turner the machine on and watched it. the relay seemed to be operating alright. I could see where the input voltage came from too. I could see a little dark patch in the clear plastic cover indicating some burning but I decided to isolate the board remover the cover and measure the continuity of the contacts. Sure enough, thouh the relay was reacting normally the contacts were burnt enough to cause no current to flow through the water heater. (dodgy bit here) I decided (11.30pm) to file the contacts to get some continuity, I know this relay needs replacing and I will get to it at some time. The service engineer’s diagnosis was correct, but surely he could have replaced the relay on the circuit board and saved us three months stress.
