Hello All,
I know there are many threads re this issue but here goes...
I have a Mastertemp 400 natural gas heater that was winterized in perfect working order at the end of last pool season. Attempts to start it up this year has resulted in the heater starting as usual and shutting down after about a minute with an E05 error on the touch panel. The SFS light on the board is also on when this sequence occurs.
So far:
new SFS installed
new thermal regulator installed
new high limit switch installed
new thermistor installed
All wiring is in good shape and all contacts were cleaned and checked
no debris, nests, cobwebs, etc. throughout the unit
blower fan fully operational with good intake/exhaust
Temperature probe at exhaust near SFS goes up to 320 degrees and holds there until it shuts down and reads E05
Touch panel works fine in all respects
Pressing "pool" while running does not yield an exhaust temp but shows 80 and briefly 40 when held.
Alk and Ph are have pretty much always been kept in range and flow is good.
I am considering buyin a new control board before calling someone in....Thoughts?
I know there are many threads re this issue but here goes...
I have a Mastertemp 400 natural gas heater that was winterized in perfect working order at the end of last pool season. Attempts to start it up this year has resulted in the heater starting as usual and shutting down after about a minute with an E05 error on the touch panel. The SFS light on the board is also on when this sequence occurs.
So far:
new SFS installed
new thermal regulator installed
new high limit switch installed
new thermistor installed
All wiring is in good shape and all contacts were cleaned and checked
no debris, nests, cobwebs, etc. throughout the unit
blower fan fully operational with good intake/exhaust
Temperature probe at exhaust near SFS goes up to 320 degrees and holds there until it shuts down and reads E05
Touch panel works fine in all respects
Pressing "pool" while running does not yield an exhaust temp but shows 80 and briefly 40 when held.
Alk and Ph are have pretty much always been kept in range and flow is good.
I am considering buyin a new control board before calling someone in....Thoughts?