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Service call to brand new aepf air handler with hkr electric heat kit.the problem is the elements come on but the fan motor does not turn,this unit is brand new and has not worked. I am the second service man on site can you direct me as to how to check a-the motor and b- the circuit board to isolate which is the problem thank you

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Wire the motor direct to the on/off switch that will make it work for now till you can locate a board manual ,put a inline fuse in the feed though as safety back up though .

Posted on Dec 29, 2010

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3 Answers

My Goodman heat pump doesn't blow air through the vents into the house, but the fan comes on when the thermostat is turn on for the air conditioning


Check first that
  • the air conditioning equipment is turned on,
  • the thermostat is calling for cooling, and that
  • the blower unit or air handler is actually blowing air through the ductwork.
Here are the details of what to check in what order if your air condtioner or heat pump doesn't start at all when you set the room thermostat to call for cooling:
  1. Check the Room Thermostat Temperature Setting: Set the thermostat to at least 5 degrees below room temperature. Our elderly mom has no patience with switches and controls. She regularly calls her air conditioning service company with a service request, sometimes late at night, because she has simply failed to set the temperature on the thermostat lower than the room temperature. Don't drive your A/C like our mother.
  2. Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". If the thermostat is not set to "cool" it is simply turning off your A/C. If the thermostat display is blank then it's not receiving power (for modern digital thermostats). Check that electrical power is on at the air handler and to the the low-voltage transformer that supplies power to the thermostat.

    If the thermostat has power, check that when you set the thermostat temperature down at least 5 degrees below room temperature the thermostat calls for cooling. If it doesn't then check for broken or shorted thermostat wires anywhere between the wall thermostat and the control board at the air handler.

    You can easily eliminate possible thermostat problems as a cause of failure of the air conditioner to start by simply eliminating the thermostat from the picture: disconnect the thermostat wires at the blower unit's control board and instead connect the two thermostat terminals directly together with a jumper wire. If the system starts then the problem is in the thermostat itself or in its wiring.

    If the thermostat is working but the compressor condenser unit won't start, you could skip ahead
    to COMPRESSOR / CONDENSER DIAGNOSTICS but I wish you'd double check the remaining steps in this article first because there are some sneaky snafus listed below that might still be the problem.

  3. Check that electricity is on for the equipment. Check all of the electrical switches and controls that can turn electrical power off at the indoor air handler or at the outdoor compressor/condenser unit. There are more of these switches than you might guess. Here's a list of what to check:

    Electrical power switches and service switches outside by the compressor, inside at the air handler, and fuses or circuit breakers in the electrical panel. Don't forget to check that the access covers to the equipment are properly closed and latched. Otherwise a
    BLOWER DOOR SAFETY SWITCH could be keeping the equipment from running.

    There are several other safety switches and controls, both manual and automatic that can leave an air conditioner or heat pump turned "off" such as a blower compartment door interlock safety switch, an electric motor overload or overheat switches, and a condensate tray spillage detector switch.

    Some hard-to-find electrical switches on an air conditioner or heat pump could be keeping your air conditioner from starting, such as
    a FLOAT SWITCH on Condensate Tray that could
    be
    causing CONDENSATE PAN SWITCH LOCKOUT - condensate spilling into an overflow pan that uses a sensor switch can be enough to shut down your air conditioner.
    or
    a blower MOTOR OVERLOAD RESET SWITCH could be keeping a fan motor from starting.

    A bad or failed starter capacitor could also be leaving your system shut down, failing to start a blower, fan, or compressor motor.
    See CAPACITORS for HARD STARTING MOTORS

    Watch out: See A/C - HEAT PUMP CONTROLS & SWITCHES to be sure you have found and checked everymanual or automatic electrical switch on the system.
  4. Check the electrical supply voltage. Even if electricity is on, if the supply voltage has fallen too far below the operating voltage range of your air conditioner it's likely that the system will not operate, particlarly, you may note that the compressor motor won't start.
    See VOLTS MEASUREMENT METHODS

Aug 22, 2017 | Goodman Heating & Cooling

1 Answer

Where can I get a schematic for a Coleman 3500A816 air handler?


With some units you must set thermostat to fan on to get the fan to run in heat mode.. or it could be a bad motor or fan relay . Generally in electric heat units one side of heater is always live then the sequencer turns heater on when thermo calls for heat.

Nov 19, 2014 | Coleman Heating & Cooling

1 Answer

Carrier electric furnace (air handler) stopped running


The 5 amp fuse may be bad, they go quite often, and they are exactly the same as the car ones. Check the fuse with a meter. If its OK turn the unit on and check for voltage going to the blower fan. You should get a reading between at least one pair of wires. The unit should have a schematic on it somewhere, check it to see which wire pairs are used for the variable speeds of the fan.

Nov 08, 2014 | Heating & Cooling

1 Answer

Carrier air handler/furnace won't turn on


from what your saying the motor is hot to touch if that is the case the motor is bad need to be replaced.

Nov 08, 2014 | Heating & Cooling

1 Answer

HKR-10C FURNACE BLOWER WONT KICK ON


if you have change the thermostat it has to have the option for electric heat the thermostat has o turn the fan on in heat mode on air handlers

Jan 07, 2013 | Goodman Manufacturing Goodman HKR-10C 10kW...

1 Answer

Pro Standard Fan mount


Since the failure of an air conditioner to turn on, loss of air conditioner cooling capacity, reduced air conditioning output temperatures, loss of cool air supply, or even loss of air flow entirely can be due to a variety of problems with one or more components of an air conditioner or air conditioning system, after reviewing the lost air conditioner cooling diagnosis procedures described in this article, be sure to also review the diagnostic procedures at each of the individual air conditioning diagnosis and repair major topics listed just below. To return to our air conditioning and refrigeration home page go to AIR CONDITIONING & HEAT PUMP SYSTEMS.

Electrical problems on HVAC systems: Keep in mind that despite the depth of technical detail you will find here about all components of air conditioners and heat pumps, most service calls for non-working air conditioners or heat pumps turn up an electrical problem. So if your A/C system is just not working at all be sure to check all of our electrical and control setting suggestions first.

Mechanical problems on HVAC systems: tend to fall into these groups: refrigerant leaks, dirty condenser coil or unit, dirty evaporator or cooling coil, or burned out (or hard-starting) compressor motors. We have also seen a number of problems with fans and fan motors in both the compressor/condenser unit and in the air handler/blower fan unit. Some of those fan problems are mechanical - like a loose fan belt or blade. MORE DETAILS

Nov 13, 2012 | Heating & Cooling

1 Answer

Amana heat pump/AEPF variable spd air handler system works great, but air flow at the higher speed is just too noisy (ducts are not very wide). Is there a way to limit how fast the air handler / blower...


Open the airhandler -should be a speed selector on the main board. If not -checkt he installation/set-up manual. May be some dip switches you can turn on or off to modify blower speed.

Jan 26, 2011 | Goodman CLQ36AR49 Air Conditioner

1 Answer

AIR HANDLER FAN NOT COMING ON AFTER COMPRESSOR TURNS ON ?


Is this a split or packaged sysyem? In a heat pump condensing unit or package unit the indoor fan motor may be delayed due to a timer or program. Otherwise you may have a weak capacitor or a bad motor. The air handler is generally a 230 v unit due to the heat strip operation, have you checked line voltage from the main breaker

May 22, 2010 | Amana Heating & Cooling

3 Answers

Goodman split unit that heats instead of cools


Hi, Could be a run capacitor on the fan motor. They usually swell up and or leak when they go bad. If not, the only real way to test them it with a specific capacitor tester. A new capacitor would be cheaper. Make sure that the outside unit is disconnected from power before opening it up, try to spin the fan blade by hand. If it doesn't spin freely it may need oiled if possible. See above solution. Your problem is the fan motor though so if this don't do it, It will have to be replaced. If this helps, Please rate my solution. Thanks, kstfas

Aug 31, 2007 | Heating & Cooling

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