Goodman Mfg RT6100004R13 - Manual (Page 28)

28
TROUBLESHOOTING CHART
Complaint
System
Operating
Pressures
POSSIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"POSSIBLE CAUSE" SYM
PT
OM
S
ystem will not star
t
Compr
e
ssor
will not star
t -
fan r
uns
C
o
mp. and C
ond. F
an w
ill not star
t
E
v
apor
ator
fan w
ill not star
t
C
ondenser
fan w
ill not star
t
C
o
mpressor runs - goes off on overload
Compr
e
ssor
cycles on over
load
S
ystem runs continuously
- little cooling/htg
Too cool and then too w
a
rm
N
o
t cool enough on w
a
rm days
C
e
rtain areas too cool, others too w
a
rm
Compr
e
ssor
is noisy
S
ystem runs - blow
s cold air in heating
Unit will not ter
m
inate defr
o
st
Unit will not defr
o
st
Low
suction pressure
Low
head pressure
H
igh suction pressure
H
igh head pressure
Test Method
Remedy
See Ser
v
ice Pr
o
ced
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
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 Blower Speed, Duct Static Press, Filter S-200
Too much air across Indoor Coil
♦ • Reduce Blower 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 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
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-down 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
Flowrator Not Seating Properly • • • Check Flowrator & Seat or Replace Flowrator S-111
•
Cooling or Heating Cycle (Heat Pump)
♦
COOLING/HP ANALYSIS CHART
No Cooling Unsatisfactory Cooling/Heating
Heating Cycle Only (Heat Pump)