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Everything looks good, continuity good through out both sides, in both controller in preheat mode, i read 3.3 Vdc running through.... but no heat whatsoever.
Fuses good..... what should i look for to test ?
Thank you...
André,
-striving to fix everything i can... and will learn
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Rep: 13
4
Well here is the information. I realized i had a second one and that one works with the same controllers... so they are not the problem. The current is likely VAC not VDC.... on the 2nd blanket, on preheat mode i get 115VAC running through.
When upplugged, the resistance of one loop is 0.68 K ohms ; and the other loop is 0.96 K ohms. Comparing with the blanket that does not heat, those readings are 23 M ohms.
Hence the real problem: the heating wires degrade with use ( and over time ? )... to the point of not heating at all.
Changing the heating wire is not something i am comfortable doing...
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@andrefontaine Do you know where the heating elements are located? Those would be the next things I would check.
Edit: I think sone of those wires might be directly hooked to the heating elements. Can you test across those with your meter in ohms mode and tell me what you get?
- de Andrew S
added a 2nd picture, there are 4 white wires. 2 on each side of the white box. each side being a side of the bed ( queen size, 2 individual controllers). So one loop has actually 2 indidual wires. Each has continuity. i get 3.3Vdc ( + - ) when preheating.
where do you want me to measure the resistance ? ( + + ) ( - - ) ( + - ) ? i think that each loop is an actual heating element.
- de andre fontaine
@andrefontaine Measure each heating element with the resistance mode on your multimeter while the device is unplugged drom the wall outlet.
- de Andrew S
( + + ) = 14.9 ohms and same value for ( - - ) as identified on the second pictire.
- de andre fontaine
What about the (+ -) resistance on both pairs?
- de honakrisi
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