servis quartz 600

[admin]

My Quartz 600 showed error code f5. The instruction book says F5 and F6 or heating related. The part done load was cold, so I guess that is the fault area. I have had a general look, the heater measures OK, and no sign of distress around the supply triac down on the bottom board. The other wire to the heater goes to the multi stage pressure switch, and so my suspicions lie there. I have a spare from an identical srapped machine, but I find the terminals are slightly differently arranges, with different numbers.
Question 1. Am I on the correct trail?
Qhestion 2. Has anybody got alternative pin out numbers for the pressure switch.
Question 3. Manual or circuit diagram availability anywhere?

[Phidom]

Re: servis quartz 600

Have you checked for earth leakage as well as continuity on the heater? Does the fault code show at the start of filling, when filling is complete or at some other stage?

[admin]

Phidom, not too sure. I was doing a number 5 wash with prewash. After it had been running for a while, I realised it was going nowhere, and F5 was displayed. The “prewash” powder had gone. Being mean, I switched off, reprogrammed for number 5 without prewash, and started again. This time the cycle completed, cold or with watever the hot may have filled, without any error code displayed. The wash load was not too important, so I hung it up to dry! Right now I am “decoding” the pressure switch connection numbers, so I will try that next, but still not sure. Will check earth leakage now.

[Phidom]

Re: servis quartz 600

You need to try a few programmes and see what happens. If memory serves me correctly, you can drain the machine by holding the cancel button in if it fails to complete a cycle. Pressure switch failure is very rare but the numbering of contacts is fairly universal, even if the layout of them varies.

[admin]

I think it is sorted. My supply valves are the modern little ball types, but I seem to have very poor quality ones. The hot was not turning on and off correctly. Now replaced with better one from my scrap box. just done a number 5 with prewash, result OK. The numbering on the pressure switch was essentialy the same, once I realised that the common of each switch section had a second spade. On one switch, the number was duplicated, on the other it was marked “P”.
I would still like to get a sight of a service manual if anyone has one, it may actually fail one day. Thanks.

[Flyman]

Re: servis quartz 600

Seem to remember on these that if you lost the hot supply and the machine filled with just cold water in the winter months it would be too cold for the range of the thermister and it would register as a fault. The modification at the time was to fit a small resistor across the thermistor contacts to give a minimum reading for the pcb. 🙄 May be wrong as trying to think back 20 years!

[Author]

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