Advertisement
Improper setting of temperature
Check if cooling (heating) load is proper.
Malfunction
of
refrigerant flow
Bad performance of heat insulation is
observed for the connection pipe of the unit.
Air circulation is
insufficient
Too high an outdoor temperature
The room is not properly closed, too frequent
of personnel passing, or heater exists in the
room.
Adjust the set temperature
Check the forecasted load of cooling (heating).
The secondary refrigerant has leakage
or is insufficient
Leakage between the internal high and
low pressure of the compressor
Malfunction of four-way valve
Local block of the capillary
Refrigerating system blockup
Make sure that heat insulation for the thick and thin pipes is good.
Heat insulation must also be provided for the joint and the
exposed part of the copper pipe.
Blockage of heat exchanger of
outdoor unit
Air filters are blocked
The fan rotation speed set is too low
The fan speed is lower.
The installation position of the
outdoor unit is not appropriate
It is available to install a shade guarding against sun and rain, and
if the maximum cooling capacity still could not meet the
requirements, it is recommended to change for air conditioner.
Ensure a proper enclosure of the room and it is better not use an
electric appliance emitting too much heat.
—93—
Perform leak detection, perform vacuum
pumping after leak was repaired, and
charge adequately amount of refrigerant
according to stipulations.
Replace the compressor
Replace the 4-way valve
Replace capillary
Observe the condensation in evaporator
and pressure values of the high-pressure
gage, and determine if the system is
blocked up. Treat the system as well.
To clean the adhesive dust on heat
exchanger
Clean the filter
turn rotate speed to HI or MEDIUM
Capacitor is
Replace the capacitor
damaged.
Motor is
Replace the motor
damaged.
Good ventilation must be provided for the
installation position of the outdoor unit.
Advertisement
