Thread: Mallory HyFire and heat
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Old 12-01-2002, 12:11 PM
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Rick Parker Rick Parker is offline
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Default Electronics & heat
If the intermitant ignition problem is only occuring when the heater is functioning as you have stated, it would appear that you have isolated the problem causing its failure. Heat sink has always been a problem with transistorized circutry. All parts expand when heated and it sounds like you are experiencing an open circut caused by it. The potting inside could have deteriorated over time and is being affected by vibration or the heat itself (after 10 min) is causing some expansion of parts (maybe a bad solder joint inside the box) or is heating the control unit to the point beyond which a specific part exeeds it design peramiters and fails to function. Reroute the hose or relocate the box.

Rick
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