Atwood Model G6A-8E water heater fails
I have an Atwood Model G6A-8E water heater that won't run without stopping and the red light going on. What I need to know are the operational parameters of the MPD 93307 control module. 1) My measu...
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When you turn the propane switch ON the spark electrode should start firing and 12V DC should be sent to gas solenoids for 6-8 SECONDS allowing gas valve to open, propane to flow, flame to ignite and then PROVE it has lit.
How are you measuring the time .....800 milliseconds :H
Brown wire......12V DC from on/off switch to module (thru thermal fuse/t-stat)
Red wire,,,,,,,,12V DC from module to gas valve (thru ECO)
Blue wire-------12V DC from module to 'Fault' Light (no flame proven fault OR ECO open)
Green wire......Ground
ECO (high temp t-stat. IF it opens (OR fails to allow DC to gas valve) fault light
Terminals/spade connectors on ECO dirty/corroded----resistance impedes DC
Spark electrode...provides high voltage spark BUT also used to transmit signal generated by main flame used to prove it lit (flame rectification ---milliamp signal)
Spark electrode has to be 'engulfed' in flame....spark gap s/b 1/8" - 3/16"
Ceramic cracked....signal tracks to ground
Module.......has to have good clean ground
800 milliseconds :H
If so..........module failing
How are you measuring the time .....800 milliseconds :H
Brown wire......12V DC from on/off switch to module (thru thermal fuse/t-stat)
Red wire,,,,,,,,12V DC from module to gas valve (thru ECO)
Blue wire-------12V DC from module to 'Fault' Light (no flame proven fault OR ECO open)
Green wire......Ground
ECO (high temp t-stat. IF it opens (OR fails to allow DC to gas valve) fault light
Terminals/spade connectors on ECO dirty/corroded----resistance impedes DC
Spark electrode...provides high voltage spark BUT also used to transmit signal generated by main flame used to prove it lit (flame rectification ---milliamp signal)
Spark electrode has to be 'engulfed' in flame....spark gap s/b 1/8" - 3/16"
Ceramic cracked....signal tracks to ground
Module.......has to have good clean ground
800 milliseconds :H
If so..........module failing
