No keep up of the pilot flame
No keep up of the pilot flame?
Flue gas
no
thermostat
is OK ?
yes
Thermo-
no
couple is
OK ?
yes
no
Electric
gas valve
is OK ?
yes
Check electric wires
and connections.
Change the flue gas
thermostat.
Change the
thermocouple.
Change the electric
gas valve.
out