Daikin DCH048 SERIES, Инструкция по эксплуатации

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18
SERVICING
Complaint
System
Operating
Pressures
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SY
M
P
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S
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st
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m
w
ill
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a
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C
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p
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fa
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an
d C
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.
F
a
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w
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f
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Test Method
Remedy
Se
e
Se
rv
ic
e
Pr
o
c
e
d
u
re
R
e
f.
Power Failure
•
Test Voltage S-1
Blown Fuse
• • •
Inspect Fuse Size & Type S-1
Unbalanced Power, 3PH
• • •
Test Voltage S-1
Loose Connection
• • •
Inspect Connection - Tighten S-2, S-3
Shorted or Broken Wires
• • • • • •
Test Circuits With Ohmmeter S-2, S-3
Open Fan Overload
• •
Test Continuity of Overload S-17A
Faulty Thermostat
• • • •
Test Continuity of Thermostat & Wiring S-3
Faulty Transformer
• •
Check Control Circuit with Voltmeter S-4
Shorted or Open Capacitor
• • • • •
Test Capacitor S-15
Internal Compressor Overload Open
•
Test Continuity of Overload S-17A
Shorted or Grounded Compressor
• •
Test Motor Windings S-17B
Compressor Stuck
• • •
Use Test Cord S-17D
Faulty Compressor Contactor
• • •
Test Continuity of Coil & Contacts S-7, S-8
Faulty Fan Relay
•
Test Continuity of Coil And Contacts S-7
Open Control Circuit
•
Test Control Circuit with Voltmeter S-4
Low Voltage
• • •
Test Voltage S-1
Faulty Evap. Fan Motor
• •
Repair or Replace S-16
Shorted or Grounded Fan Motor
• •
Test Motor Windings S-16
Improper Cooling Anticipator
• •
Check Resistance of Anticipator S-3B
Shortage of Refrigerant
• • •
Test For Leaks, Add Refrigerant S-101,103
Restricted Liquid Line
• • • •
Remove Restriction, Replace Restricted Part S-112
Dirty Air Filter
• • • •
Inspect Filter-Clean or Replace
Dirty Indoor Coil
• • • •
Inspect Coil - Clean
Insufficient air across Indoor Coil
• • • •
Check Blower Speed and Rotation, Belt, Pulleys,
Duct Static Filter S-200,205,
206 207
Too much air across Indoor Coil
•
Reduce Blower Speed, Check Pulley Adjustment S-205, 207
Overcharge of Refrigerant
• • • • •
Recover Part of Charge S-113
Dirty Outdoor Coil
• • • • •
Inspect Coil - Clean
Noncondensibles
• • • •
Recover Charge, Evacuate, Recharge S-114
Recirculation of Condensing Air
• • • •
Remove Obstruction to Air Flow
Infiltration of Outdoor Air
• • •
Check Windows, Doors, Vent Fans, Etc.
Improperly Located Thermostat
• •
Relocate Thermostat
Air Flow Unbalanced
• •
Readjust Air Volume Dampers
System Undersized
• •
Refigure Cooling Load
Broken Internal Parts
•
Replace Compressor S-115
Broken Valves
• • •
Test Compressor Efficiency
S-104
Inefficient Compressor
• •
Test Compressor Efficiency S-104
Expansion Device Restricted
• • • • • •
Remove Restriction, Replace Expansion Device 111
Loose Hold-down Bolts
•
Tighten Bolts
Flowrator Not Seating Properly
• •
Check Flowrator & Seat or Replace Flowrator S-111
•
No Cooling
Cooling Cycle
COOLING ANALYSIS CHART
Unsatisfactory
Cooling