Daikin ComfortNet DX7TC, Инструкция по эксплуатации

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36
TROUBLESHOOTING CHARTS
Complaint
System
Operating
Pressures
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SYM
PT
O
M
Sy
st
em
w
ill not
s
tar
t
C
om
pr
es
sor
w
ill not
s
tar
t -
fan r
uns
C
om
p.
and C
ond.
F
an w
ill not
s
tar
t
Ev
apor
at
or
fan w
ill not
s
tar
t
C
ondens
er
fan w
ill not
s
tar
t
C
om
pr
es
sor
runs
- goes
of
f on ov
er
load
C
om
pr
es
sor
c
yc
les
on ov
er
load
Sy
st
em
runs
c
ont
inuous
ly
- l
itt
le c
ool
ing/
ht
g
Too c
ool
and t
hen t
oo w
ar
m
N
ot
c
ool
enough on w
ar
m
day
s
C
er
tai
n ar
eas
too c
ool
, ot
her
s t
oo w
ar
m
C
om
pr
es
sor
is
noi
sy
Sy
st
em
runs
- bl
ow
s c
ol
d ai
r i
n heat
ing
U
ni
t w
ill not
ter
m
inat
e def
ros
t
U
ni
t w
ill not
def
ros
t
Low
s
uc
tion pr
es
sur
e
Low
head pr
es
sur
e
H
igh s
uc
tion pr
es
sur
e
H
igh head pr
es
sur
e
Test Method
Remedy
See S
er
vi
ce P
ro
ced
ur
e R
ef
.
Pow er Failure
•
Test Voltage S-1
Blow n Fuse
• • •
Inspect Fuse Size & Type 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 w ith 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 w ith 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
Open Element or Limit on Elec. Heater
♦ ♦
Test Heater Element and Controls S-26,S-27
Dirty Air Filter
• • • •
♦ Inspect Filter-Clean or Replace
Dirty Indoor Coil
• • • •
♦
Inspect Coil - Clean
Not enough air across Indoor Coil
• • • •
♦
Check Blow er Speed, Duct Static Press, Filter S-200
Too much air across Indoor Coil ♦
•
Reduce Blow er Speed S-200
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 Window s, 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
Wrong Type Expansion Valve
• • • • • •
♦
Replace Valve S-110
Expansion Device Restricted
• • • • • • •
Remove Restriction or Replace Expansion Device S-110
Oversized Expansion Valve
• •
Replace Valve
Undersized Expansion Valve
• • • • •
Replace Valve
Expansion Valve Bulb Loose
• •
Tighten Bulb Bracket S-105
Inoperative Expansion Valve
• • •
Check Valve Operation S-110
Loose Hold-dow n Bolts
•
Tighten Bolts
Faulty Reversing Valve
•
♦ ♦ ♦ ♦ ♦ ♦
Replace Valve or Solenoid S-21, 122
Faulty Defrost Control
•
♦ ♦ ♦ ♦ ♦ ♦ Test Control S-24
Faulty Defrost Thermostat
♦ ♦ ♦ ♦ ♦ ♦ ♦
Test Defrost Thermostat S-25
Flow rator Not Seating Properly
• • •
Check Flow rator & Seat or Replace Flow rator S-111
•
Cooling or Heating Cycle (Heat Pump)
♦
COOLING/HP ANALYSIS CHART
No Cooling
Unsatisfactory
Cooling/Heating
Heating Cycle Only (Heat Pump)