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Member Since 05 Apr 2011
Offline Last Active Jul 19 2011 12:40 PM

Topics I've Started

Kenmore dryer 41793142300

06 June 2011 - 03:38 PM

Hi, the ignition process is according to expectations, igniter glows, gas valves (two stages) seem to operate (see below), and process is aborted and there is a bit of gas smell.

Have tried the valves one at the time with external 110V AC.

Booster coil 1950 ohms
Holding coil 550 ohms
Secondary coil 1300 ohms

The Secondary coil produces the expected solid sound when the plunger opens and remains open under power.

The other valve with a "combination" of two coils (Booster coil and Holding coil) sounds like it is following a 60 cycle movement, as if the spring were too strong. Have not opened the valve 'cause I don't have the special tool to do it with. Have tried one or both coils in paralell with similar results, as if the plunger was opening and close following the sine wave.

Here is where it is getting interesting.... have asembled the single coil (Secondary) in the other .... (wrong for that coil) ... valve and... it sounds very solid "ON" and "OFF"

When the "combination" coil is mounted in the secondary valve (wrong for that coil/valve) ... and.... only the Booster coil is energized.... the secondary valve is still solid ON and OFF.

When the Booster and Holding coils are both connected to power ... but....still in the wrong valve, the valve started to follow the sine wave....... ( I don't have an explanation for this....)

NOTE. The Booster and Holding coils are sharing a common terminal, so they can't be connected to produce opposite magnetic fields..... You still get credit for thinking that I have connected them in the opposite direction..... :thumbsup:

So....... the Secondary coil operates both valves and .......the "Combination coil" is operating the "wrong valve" but not the one which it is expected to operate.

However, degrading magnetic power is not the typical coil failure mechanism. They work or .....they are hopelessly open forever ....

A new set of coils is about $30, reasonable enough to try. A new valve assm is over $200... ouch......

Your suggestions are welcomed.......

Thanks in advance, Abel

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