Amana ASXH3 Series, Инструкция по установке и обслуживанию

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11
TROUBLESHOOTING INFORMATION
Complaint
Unsatisfactory
Cooling
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE"
SYM
PT
O
M
S
ys
tem
w
ill
not
s
tar
t
C
om
pr
es
sor
w
ill
not
s
tar
t -
fan r
uns
C
om
pr
es
sor
and C
ondens
er
F
an w
ill
not
s
tar
t
E
vapor
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
S
ys
tem
runs
c
ont
inuous
ly
- l
itt
le c
ool
ing
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
to c
ool
ot
her
s t
o w
ar
m
C
om
pr
es
sor
is
noi
sy
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
Power Failure • Test Voltage
Blown Fuse • • • Impact Fuse Size & Type
Loose Connection • • • • Inspect Connection - Tighten
Shorted or Broken Wires • • • • • • Test Circuits with Ohmmeter
Open Overload • • Test Continuity of Overloads
Faulty Thermostat • • • • Test Continuity of Thermostat and Wiring
Faulty Transformer • • Check Control Circuit with Voltmeter
Shorted or Open Capacitor • • • • Test Capacitor
Internal Compressor Overload Open • Test Continuity of Overload
Shorted or Grounded Compressor • • Test Motor Windings
Compressor Stuck • • Use Test Cord
Faulty Compressor Contactor • • • • Test Continuity of Coil and Contacts
Faulty Fan Relay • Test Continuity of Coil and Contacts
Open Control Circuit Test Control Circuit with Voltmeter
Low Voltage • • • Test Voltage
Faulty Evaporator Fan Motor • • Repair or Replace
Shorted or Grounded Fan Motor • • • Test Motor Windings
Improper Cooling Anticipator • Check Resistance of Anticipator
Shortage or Refrigerant • • • • Test For Leaks, Add Refrigerant
Restricted Liquid Line • • • • Replace Restricted Part
Undersized Liquid Line • • • Replace Line
Undersized Suction Line • Replace Line
Not Enough Air across Indoor Coil • • • • Speed Blower, Check Duct Static Pressure
Too Much Air across Indoor Coil
•
Reduce Blower Speed
Overcharge of Refrigerant
• • · • •
Recover Part of Charge
Noncondensibles
• • •
Recover Charge, Evacuate, Recharge
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
Broken Valves • Test Compressor Efficiency
Inefficient Compressor • • • Test Compressor Efficiency
High Pressure Control Open • Reset and Test Control
Unbalanced Power, 3PH • • • Test Voltage
Wrong Type Expansion Valve • • • Replace Valve
Expansion Valve Restricted • • • • • • Replace Valve
Oversized Expansion Valve • • Replace Valve
Undersized Expansion Valve • • • • • Replace Valve
Expansion Valve Bulb Loose • • Tighten Bulb Bracket
Inoperative Expansion Valve • • • Check Valve Operation
Loose Hold-down Bolts • Tighten Bolts
No Cooling
System
Operating
Pressures
For detailed service information, refer to the
Remote Condensing Unit Service manual. NOTICE
Units with rotary or reciprocating compressors and non-
bleed TXV’s require a Hard Start Kit.