hi i have a raven heat boiler ls100t that donsnt fire up i have changed dhw and overheat themostat sensor and it has a new main board but still wont fire
all boilers have a lighting sequence for example pump-fan- spark-ignition. start at beginning and work through check for voltage, resistance etc. go to ravenheat web site and get tech. specs. on boiler
brian
February 2011
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