If the breaker remains set, check to see if compressor is

 

 

running and condenser fan turns on.

 

 

After compressor runs a few minutes, check the

 

 

refrigerant “sight glass” in the ¼” copper tubing. Look

 

 

for bubbles.

 

 

If no bubbles are present and compressor is running,

 

 

refrigerant system is running OK.

 

 

If bubbles are present, system is low on refrigerant.

 

 

A CERTIFIED HVAC service technician will have to locate

 

 

and repair any refrigerant leaks, then add refrigerant.

 

 

Condenser fan should come on either immediately on

 

 

compressor start or after sight glass gets warm.

 

 

If not, compressor will trip off on high pressure safety

 

 

control, reducing capacity and possibly tripping the

 

 

breaker.

 

 

In this event, CERTIFIED HVAC service technician will

 

 

have to check for the problem.

 

 

 

Compressor runs intermittently

 

 

 

 

 

1. Fan coil blower

Evaporator coil will probably be iced.

 

not running with

Call a CERTIFIED HVAC service technician.

 

compressor

 

 

 

 

 

2. Fan coil blower

Increase speed control setting if equipped.

 

running too slow or air

Clean coil if necessary, remove obstructions.

 

flow blocked.

Coil icing can occur.

 

 

 

 

3. Condenser coil

Clean coil and fan thoroughly, clear any obstructions

 

blocked with dirt or

and/or cause for hot air recirculation.

 

other matter.

 

 

 

 

 

4. Condenser fan

Call a CERTIFIED HVAC service technician to diagnose

 

motor bearings faulty

and repair.

 

causing motor to trip on

 

 

overload, followed by

 

 

compressor cycling off.

 

 

 

 

 

5. Hot air, above 125°,

Provide source of cool air to condenser space in

 

entering condenser from

accordance with directions in this manual.

 

confined space (outer

 

 

room)

 

 

 

 

 

6. System refrigerant

Call a CERTIFIED HVAC service technician to diagnose

 

overcharge.

and recover excess refrigerant.

 

 

 

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WhisperKool SS4000, SS7000 owner manual Compressor runs intermittently, And/or cause for hot air recirculation