fifth wheel furnace
hello'''''''i have HYROFLAME 8500 SERIES COMES ON FOR ABOUT 10 SECS GOES OFF COMES ON ALITTLE LONGER NEXT TIMES GOES OFF COMES ON EVEV LONGER...ABOUT 30 TO 45 SECS THEN SHUTS OFF FOR 1HR .....ANY I...
Forum Discussion
Warm air blowing on t-stat will cause cycling problems but usually longer duration between cycles.
The short cycling you are experiencing could be due to:
Restricted discharge air flow.......make sure all registers are clear and flowing air
Restricted return air flow.....make sure that return side of furnace is not obstructed
Furnace over-firing due to High propane pressure....pressure should be 11" WC with at least 50% of other propane appliances in service.
High limit switch is faulty.......190*F switch (need to pull furnace to access)
(You can check for 12V fluctuation at connector on circuit board----white wire marked AIR on board. If limit switch is opening/closing power will come/go at that contact)
The short cycling you are experiencing could be due to:
Restricted discharge air flow.......make sure all registers are clear and flowing air
Restricted return air flow.....make sure that return side of furnace is not obstructed
Furnace over-firing due to High propane pressure....pressure should be 11" WC with at least 50% of other propane appliances in service.
High limit switch is faulty.......190*F switch (need to pull furnace to access)
(You can check for 12V fluctuation at connector on circuit board----white wire marked AIR on board. If limit switch is opening/closing power will come/go at that contact)
