Suburban H2O Heater
Subject: approx 10 year old 10 gal gas/elec water heater.
Has worked fine up til now. After operating on electric for a week tried to switch to gas. Switch works fine; solenoids and igniter also check OK.
Igniter starts, gas flows, and lights. When igniter shuts off after a few seconds, the gas shuts off also. Module makes its three attempts and gives up. Ignition sequence sounds and looks normal, but the valves are only open when the igniter is firing.
Given there are only three components in the gas system; control module, burner valves, and igniter; and two out of three work, I'm leaning toward a failed control module.
It appears to be 'glued' to the top of the tank.
Am I correct in blaming the module and if so how hard is it to change?
Has worked fine up til now. After operating on electric for a week tried to switch to gas. Switch works fine; solenoids and igniter also check OK.
Igniter starts, gas flows, and lights. When igniter shuts off after a few seconds, the gas shuts off also. Module makes its three attempts and gives up. Ignition sequence sounds and looks normal, but the valves are only open when the igniter is firing.
Given there are only three components in the gas system; control module, burner valves, and igniter; and two out of three work, I'm leaning toward a failed control module.
It appears to be 'glued' to the top of the tank.
Am I correct in blaming the module and if so how hard is it to change?
