
49
Troubleshooting Outdoor Components
4-Way Valve Troubleshooting
Heating Mode
Cooling Mode
Checking the 4-way valve in cooling mode requires
the measurement of 4 readings. First record the
temperature of the compressor discharge tubing,
secondly record the temperature of the tubing going
to the condenser. There should be no more than a
10 degrees difference between the two readings.
The next set of readings will require recording the
temperature of the tubing going to the suction
line and the temperature of the tubing going to
the accumulator. Again, if there should be less
than 10 degrees difference between these readings.
A temperature reading higher than 10 degrees
may indicate a leaky valve (not fully shifted) or a
blockage in the valve.
Checking the 4-way valve in heating mode requires
the measurement of 4 readings. First record the
temperature of the compressor discharge tubing,
secondly record the temperature of the suction
line tube. There should be no more than a 10
degrees difference between the two readings.
The next set of readings will require recording the
temperature of the tubing going to the condenser
coil and the temperature of the tubing going to
the accumulator. Again, if there should be less
than 10 degrees difference between these readings.
A temperature reading higher than 10 degrees
may indicate a leaky valve (not fully shifted) or a
blockage in the valve.
4-Way valve solenoid resistance check:
Be sure all power is off to the unit. Remove the plug connecting the 4-way vale to the circuit board. Check the
resistance with an ohmmeter. The reading should indicate 1.8k Ω. If the reading is infinite, replace the solenoid
coil.
Compressor
Discharge
To Accumulator
To Condenser
Coil
Suction Line
Compressor
Discharge
To Accumulator
To Condenser
Coil
Suction Line
All manuals and user guides at all-guides.com
Содержание RIO09HP115V1A
Страница 41: ...41 Electrical Schematics 24K Indoor Unit All manuals and user guides at all guides com a l l g u i d e s c o m ...
Страница 42: ...42 Electrical Schematics 24K Indoor Unit All manuals and user guides at all guides com ...
Страница 130: ...130 Gree Electric Appliances Inc C 2014 Cat No DFS RIO HP 2SM All manuals and user guides at all guides com ...