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Heater problem model PHK 080-1

\015 Few weeks ago i noticed a burn smell coming from the heater on the house, it smell like the first time you turn the heater on in the winter and it burns the dust or hair trapt on the coils during summer.\015\012and i noticed a lower flow of air coming from the unit.\015\012it does blow a little heat but not suficient to heat the house.\015\012i did check the filters and i did not change them for 4 months (ups....)\015\012i was thinking that the coils on the heater are chocked with dust and dirt, (since i did not change the filters sooner and because of the burn smell)\015\012however this morning i turn the unit off and turn on the fan only, and it did not came on.\015\012i check the brackers and all of them are O.K. (2 for the A/C and 2 for the Heater. out side the house by the unit, and 1 in the box where all the brackers fro the house are)\015\012at this point i am thinking that a fan may be the problem, but i am not sure.\015\012do you guys have any ideas on what i may do.\015\012thank you.\015

Answers :

Blower moter not comeing on. motor bench test ok. were is time relay located? please help.
THE BURNING SMELL IS NORMAL. BEFORE HEATING SEASON OPEN ALL DOORS AND TURN THE HEAT UP AND LET RUN TILL ALL DUST IS BURNT OFF.\015\012\015\012IF BLOWER IS NOT COMMING ON NOW. THERE ARE 2 TIME DELAY RELAYS, AND ANOTHER RELAY FOR "FAN ONLY OPERATION". ALWAYS MAKE SURE THEY ARE NOT THE PROBLEM BEFORE REPLACING AN EXPENSIVE MOTOR.

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