Neptune MAH4000AWQ Washer Hot/Warm/Cold Not Working
Posted 07 June 2005 - 07:26 AM
The problem with the machine is when slelcting either hot, warm or cold water temperatures I get only warm water. It started out as an intermittent problem but now it's 100% of the time. The machine makes a humming sound for a brief period after I hit the start button.
Oh wisest of the wise, please bestow upon my humble self a small slice of your wisdom so that I may keep the repairman at bay.
Neptune MAH4000AWQ Washer
Posted 09 June 2005 - 04:43 AM
Posted 09 June 2005 - 07:56 PM
For service manuals and lots of other goodies, become an Apprentice ==> Apprenticeship
Posted 21 February 2007 - 03:37 PM
Using cold/cold cycle the washer is drawing hot water on initial fill. I have seen postings discussing 75* target temp and need for both hot and cold to adjust. However the water is much hotter than normal now. The rinse cycle works ok with only cold water drawn. I've made a few measurements so far:
P2-5 to P2-6 thermister was 28K in the morning and 35K later in the day. Washer is near a cold outside wall.
P7-1 (hot valve) to neutral and P7-2 (cold valve) to neutral are each 1K under no-power. During fill cycle, when too much hot water is drawn, both of these measure 120VAC. During rinse, when only cold water is drawn, only P7-2 has 120VAC.
I ohmed-out the water temp switch for each selection, and it seemed OK. Noted that "open" measured 29K (for example RD/PU or RD/PK when selecting cold/cold).
Have seen postings suggesting changing the hoses, but why? For what it is worth I did disconnect the hoses to check the screens the first time we noticed the problem. Screens were OK. First time we used the washer after that it worked correctly, but has been filling with hot every time since. Coincidence?
I will rework the file(s) with the wiring diagram and post them. I never did see a resolution to the original post here. What happened? Thanks in advance for all help.
Posted 23 February 2007 - 08:55 AM
Posted 23 February 2007 - 10:07 AM
Posted 23 February 2007 - 10:48 AM
Posted 23 February 2007 - 11:21 AM
Posted 23 February 2007 - 12:17 PM
Hot water is most often 10 degrees colder when it arrives at your machine from when it leaves your hot water heater. In general hot water is 130 degrees Fahrenheit (54.4 Celsius) or above. Warm water is between 110 and 90 degrees Fahrenheit ( 43.3-32.2 Celsius). Cold water is generally between 80 and 60 degrees Fahrenheit (26.7-15 Celsius). If cold water is below 60 degrees Fahrenheit (15 Celsius), clothes are unlikely to be cleaned very well.
Posted 03 March 2007 - 01:40 AM
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