Daewoo Musso. Manual — part 317
MANUAL & SEMIAUTO-HVAC 7B/C-3
Application
Type
Expansion Valve
Resistance
Thermo Amp
Description
Tank laminated
Uniform external pressure type (1.5 RT)
4 stage (Coil resistance)
Sensor type OFF : 2±0.5°C, DIFF : 2±0.5°C
EVAPORATOR
Application
Heater Core Type
Heating Capacity
Heater Core Size (LxWxT)
Description
2-ROW
4,600 kcal/h (AT 300 CMH)
219.5 x 151.8 x 52.0
HEATER UNIT
Application
Condenser Bolt
Condenser Fan Nut
Condenser Bolt
Receiver Drier Pipe Bolt
Receiver Drier Pipe Bolt (Condenser)
Pressure Pipe Bolt
Pressure Mounting Bolt
N
l
m
4-6
4-6
4-6
5-8
4-6
20-30
20-26
FASTENER TIGHTENING SPECIFICATIONS
7B/C-4 MANUAL & SEMIAUTO-HVAC
DIAGNOSIS
m
MANUAL & SEMIAUTO-HVAC 7B/C-5
Action
Clean oily plate using cleaning agent.
Charge battery or check for cause.
Check wire continuity
Check A/C switch and fan switch for continuity and ground.
DEFECTIVES IN FAN MOTOR CIRCUIT
Fan Motor Does Not Run
Checks
Blown fuse
Battery voltage is low
Faulty wiring
Faulty ground
Action
Check for short and replace fuse.
Check battery voltage.
Check connectors’ connection.
Do not apply grease. This can cause voltage down.
Remove body painting and completely ground,
Tighten ground bolts and make sure body ground connection.
Checks
Blown resister temperature fuse
Air leakage in parts connection
Action
Replace resistor.
Check heater, cooling unit and blower for proper connection.
Fan Motor Runs in ‘4’position Only (‘3’, ‘2’, ‘1’ : Does Not Run)
Frosted Evaporator
DEFECTIVES IN COMPRESSOR CIRCUIT
Compressor Does Not Run
Checks
Faulty thermo amp
Action
Frosted evaporator reduces cooling capacity.
Off compressor and maximize blowing capacity
Checks
Faulty high/low pressure
Faulty A/C relay
Action
Check compressor magnet voltage supply.
A/C relay.
Checks
Oily clutch plate
Low voltage
Faulty electric connection or operation
Magnetic Clutch Slips /Idles
Checks
Clogged or blocked intake grille
Action
Clogged or blocked intake grille reduces blowing capacity.
Motor Runs With Poor Blowing
Checks
Excessive clearance between
Clutch plate and clutch coil
Action
Adjust clutch clearance (0.2-0.6mm).
Magnetic Clutch Plays By Hand Only
7B/C-6 MANUAL & SEMIAUTO-HVAC
COMPONENT LOCATOR
VENTILATION
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