Working on an engineered air model: dj-40 . Has a djm 3.4 controller. For the passed year the unit keeps locking out on flame failure, have had numerous guys changing the flame sensor on it. Odviously this isn't problem, my flame sensor is reading 1.7 micro amps.
Did notice when I first worked on this unit that blower wasn't moving very much air. Put new belt on and adjusted pulleys. Thought maybe had locked out from high limit.
Set point on unit is 15c and it fired for heat again last night and of course locked out again.
I'm new to MUA's , you guys have any suggestions? Someone said I should just change ignition module, but not sure that is the problem.
Any help would be appreciated.
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