Troubleshooting by Remote Controller
Si20-701_B
475
Check for Excessive Refrigerant Charging
As criteria for judging whether refrigerant is excessively
charged or not, refer to the following operating
conditions.
<Diagnosis of excessive refrigerant charging>
In cooling operation
(1) Because high pressure rises due to excessive
charging, overload control is carried out and capacity
tends to run short.
(2) Considering pressure load, compressor discharge
pipe temperature is low.
(3) Subcooling degree of condensate liquid becomes
large. Therefore, temperature of blown air passing
through subcooling part decreases in heating
operation.
CHECK 10