My problem has a few minor complicating factors. First, I have a dual
fuel heat pump. Several years ago, an HVAC tech told me that the
compressor could no longer be used for heating purposes and I would
have to switch over to the emergency heat setting which uses the gas
furnace exclusively. Last summer, I replaced the blower motor and all
was well until this fall when we turned on the heat and had none. I
noticed that the furnace is coming on for about a minute and then
shuts off. Apparently it is shutting off so as not to overheat since
the blower is not responding. My system has some very complicated
looking controls between the thermostat and the HVAC and I'm thinking
maybe just replacing the whole mess with a simple traditional
thermostat since the heat pump is no longer functioning. In the mean
while, does anyone have any idea of what may be the problem or where
to look. The new fan is a two speed where the original was not and I
connected the wire that causes the fan to run in the high speed mode.
I am reasonably knowledgeable with regards to things electrical and
mechanical and want to fix the thing myself if possible.
Thanks for any input you may have.
You need to call a tech that knows WTF they are doing. Quit screwing with it
yourself, You have already demonstrated that you don't have the knowledge or
experience to deal with your comfort system. There is a very high likelyhood
that your gonna do more damage by DIY, and it will be more expen$ive to
Be sure you follow these directions exactly.
First, cut the power to the unit. Go to the heat pump, take the control
access panel off. You will see some copper tubing. Now here is the
tricky part. There are large tubes, medium size tubes and very small
tubes in a cluster. Take a pair of needle nose pliers and pinch all of
the tubes one at a time. Be careful not to pinch them so tight that they
break. Just so they are flat. Put the cover back on the unit.
Go back in the house, restore the power, turn the thermostat to 3 deg
higher than the current room temp. Call your family into the room, put
you hands in your armpits, hop around and squawk like a chicken. Problem
Was that the same HVAC tech that told you to get a heat pump in the
first place? Who told you you'd be wasting your money if you
installed anything other than a heat pump? Or did your system come
with the house when you bought it?
Coming here to ask advice will get you nowhere. All the dorks around
here are going to tell you to buy another heat pump, this time with
more complicated and expensive electronics.
The HVAC industry is a scam. All the clowns that scratch out a living
doing it here will tell you to buy a new heat pump, this time with a
control system that runs Windows Vista. See, they get a kick-back
when they push certain hardware, so they won't get their trip to
Hawaii unless they can sell enough heat pump units to home owners like
They all spew crap like modern HVAC systems are more efficient and
save money - until 10 years later they want you to buy a new system
when a $100 board or $500 compressor fails. Most people don't stay in
the same house long enough to realize the savings of new equipment,
and they think they're getting away lucky if they have to replace
their HVAC system only once during the time they own a home.
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