Suzuki RA410, Руководство пользователя

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HIGH PRESSURE GAUGE
LOW PRESSURE GAUGE
THERMOMETER A
T
CENTER DUCT
Insufficient
cooling of
condenser
1B-28 AIR CONDITIONING (OPTIONAL)
TESTING RESULTS POSSIBLE CAUSE REMEDY
Pressure high
(“A” area of high side
graph)
Refrigerant overcharged
Expansion valve frozen or clogged
Clogged refrigerant passage of high side
Condenser fan malfunction
Dirty or bent condenser fins
Compressor malfunction (Insufficient oil etc.)
Engine overheat
Recharge
Check expansion valve
Clean or replace
Check condenser fan
Clean or repair
Check compressor
Check engine cooling
system
Pressure low
(“B” area of high side
graph)
Insufficient refrigerant (Insufficient charge or
leakage)
Expansion valve malfunction (valve opens too
wide)
Compressor malfunction (Insufficient
compression)
Check for leakage, repair
if necessary and recharge
Check expansion valve
Check compressor
Pressure high
(“A” area of high side
graph)
Expansion valve malfunction (valve opens too
wide)
Thermister (heat sensing tube) of expansion
valve improperly mounted (poor contact, poor
insulation)
Compressor malfunction (Insufficient
compression)
Check expansion valve
Check thermister
Check compressor
Pressure low
(“B” area of high side
graph)
Insufficient refrigerant (Insufficient charge or
leakage)
Expansion valve malfunction (valve opens too
narrow)
Clogged refrigerant passage (crashed pipe)
Check for leakage, repair
if necessary and recharge
Check expansion valve
Repair or replace
Outlet air temperature
at center duct is high
(Crossing point is in
area “A”)
Insufficient or excessive charge of refrigerant
Dirty or bent evaporator fins
Air leakage from cooling (heater) unit or air duct
Malfunctioning, switchover function of damper in
cooling (heater) unit
Compressor malfunction
Check refrigerant
pressure
Clean or repair
Repair or replace
Repair or replace
Check compressor
Outlet air temperature
at center duct is low
(Crossing point is in
area “B”)
Insufficient air volume from center duct (Heater
blower malfunction)
Thermister (heat sensing tube) malfunction
Check blower motor and
fan
Check thermister