Heat Pump outside unit not powering up

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  #1  
Old 05-08-03, 09:10 PM
JimH7
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Unhappy Heat Pump outside unit not powering up

My external heat pump unit does not seem to be functioning, possibly after a storm. What steps can I take before calling the repair guy? It seems like it is not getting current. The fan is blowing air through the house, but no movement from the outside unit.
Thanks!!!
 
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Old 05-09-03, 02:08 AM
firsthvac
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Before calling a service company for a unit not running you should always check the following basic items:

1. Check the circuit breakers to the outdoor unit by physically turning them off, then back on again. Many times a circuit breaker will look ok but in reality it has tripped.

2. Check for any blown fuses in the disconnect box mounted near (or sometimes on) the outdoor unit. This is especially true after experiencing a sudden power outage or voltage spike as is often associated with storms. If you don't know how to check/replace the fuses or are uncomfortable working with electrical components, get an electrician or HVAC service tech to show you what to do.

A COUPLE NOTES ABOUT REPLACING FUSES:

Always use "TIME-DELAY" type fuses that are the proper amperage rating for your unit. The high electrical current needed to start many a/c and heat pump compressors will often blow the cheaper fast blow fuse found in many hardware stores. Time-delay fuses are designed to combat this problem while still providing proper current protection.

NEVER USE LARGER RATED FUSES. Oversizing a fuse is only asking for electrical related trouble like fires and shocking hazards.

Replace both fuses (if you have two) at the same time. Experience has shown that many times the fuse not changed will be the next one to blow out. Keep the good one from the changeout to use as a spare for the times when you can't readily get another pair of new fuses.
 
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Old 05-09-03, 05:03 PM
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also

see if the capacitor is swollen, have seen lightning do this too.
 
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