ASI's Heat Pump Troubleshooting Tips
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Heat Pump Troubleshooting Tips
Checking your Heat Pump Control Thermostat* Is the thermostat's system selector switch in the "heat" position?
* Is the thermostat's temperature set point at least three degrees higher than the temperature inside?
* You can check your systems back up heat source by switching to emergency heat on the heat pump thermostat, this should override the outdoor unit from running and run on the back source electric heat.
* Is your thermostat is electronic? Some electronic thermostats operate from batteries and if they okay the LCD display should be visible. Many times if the LED display is not visible this may also indicated that the power to the electric furnace or air handler is off (see below). If you think you have a thermostat that runs off of batteries you can usually change the batteries by carefully removing the thermostat from the wall mount as the batteries are generally located inside the thermostat.
* You can test your heat pump thermostat if it has switch or button to control the indoor blower or fan, switch it to "on." Listen to hear if the blower or fan comes on. If you do not hear any fan or there is no air coming from your supply registers then check to be sure the power is on at the indoor unit. (see below) If the power is on and you do not hear the fan running this may indicate that you have a bad capacitor, blower motor or other common control issue.
Checking your Power or Electrical
* Your heat pump system may have a power switch at the indoor unit. In most homes in the Treasure Valley area the power switch looks just like a regular light switch and is generally located right on or beside the indoor unit. Make sure the switch is on as indicated above.* Many heat pump systems have another hidden switch that shuts off your unit if the front service panel or blower door is removed. Make sure all the service panels are on and secure.
* If the fan still does not operate check to see if any electrical panel circuit breakers are tripped. Usually if a circuit breaker has tripped it will not be fully in the "on" position. To reset the circuit breaker turn it off all the way and then back on.
Checking your outdoor unit
* If you have a heat pump and you can hear the outdoor unit running but cold air is blowing in your home you should wait a few minutes to see if the system starts heating again. Heat pumps will typically build up ice on the outdoor unit and in order for the system to continue working properly this ice must be removed. The heat pump will go through a defrost cycle to melt the ice that usually will last just a few minutes. Sometimes the defrost timer or controller fails and the unit either builds up ice to the point that it will not work or it gets stuck in this defrost mode. Check to see if you have ice build up on the outdoor unit if you do then you should call a qualified service company.Back Up Emergency Heat
* Most heat pump systems have back up or emergency heat, this back up heat will usually come on when it gets too cold outside or too cold in your home, in many cases you can manually turn on the emergency back up heat at the thermostat with a selector switch or button, this will get you some heat while you wait for repairs to your heat pump.
SAFETY FIRST!
These easy to understand HVAC maintenance tips are for common tasks that
almost any homeowner can perform. Please do not perform these tips if
you are not comfortable performing
them. Electricity is dangerous and can cause serious injury or death,
always assume electrical power is on unless you have checked it with an
appropriate electrical meter. Understanding Electrical Circuits and Standard Household Voltages Heating and Air Conditioning Equipment have many moving parts such as fans and other devices, Always stay clear of fans and other moving parts as they can start at any time. Many electrical heating equipment operate at high voltages. All gas equipment and many other types operate using either natural or propane gas or fuel oil, always use extreme caution when working with flammable sources. It is always required to secure the power and gas or oil off to any equipment or appliance before performing service or repairs. Ameri-Serv, Inc. assumes no liability for
the use of the information provided on this website. Please always use common sense and make sure the electrical power is off before opening and accessing the inside of any equipment or appliance. Reaching into anything with electrical or moving parts can result is serious injury. Remember Safety is Always First
ASI's Heating Related Articles
  If
your Gas Furnace is an older gas furnace (usually 10 plus years old) it
may have a standing pilot light like a water heater, if this is the
case carefully follow the instructions on the furnace to light the
pilot. Some models have an intermittent pilot light or spark ignition
and you can usually hear the the system try to light the pilot flame
with a spark .. |
  Maintaining
your gas heating furnace system is important both to help make the
system last longer and to help keep the operating costs as low as
possible. All furnaces should be cleaned and inspected annually and
there are some things you can do yourself to save money but everyone
should call a qualified technician to inspect the system every fall as
well as to make any necessary repairs. |
  The
first thing that must happen is that the control thermostat must
provide a voltage signal to the furnace heating unit. The thermostat can
be most understood as simply a switch that turns a low voltage 24 volt
power on and off to the respective terminals. In the case of the
thermostat calling for heat the thermostat switches on the .. |
  Homeowners
can help prevent failure of their oil or gas furnace heat exchanger by
simply maintaining their system regularly. This includes having an
annual inspection of the system which should always including cleaning
of the blower and cabinet. More importantly the homeowner needs to make
sure that they maintain and clean or change their system air filters |
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13601 W McMillan Rd Suite 102-120 Boise, Idaho 83713 Office (208) 342-4328 Fax (208) 906-1282
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Copyright 2011. ASI Heating and Cooling a Division of Ameri-Serv, Inc. All rights reserved