Troubleshooting Chart - Goodman ASX Service Instructions Manual

TROUBLESHOOTING CHART

Com plaint
P OS SIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"P OS SIBLE CAUSE"
Pow er Failure
Blow n Fus e
Unbalanced Pow er, 3PH
Loose Connec tion
Shorted or Broken Wires
Open Fan Ov erload
Faulty Thermos tat
Faulty Transf ormer
Shorted or Open Capacitor
Internal Compres s or Overload Open
Shorted or Grounded Compress or
Compress or Stuc k
Faulty Compress or Contactor
Faulty Fan Relay
Open Control Circ uit
Low V oltage
Faulty Evap. Fan Motor
Shorted or Grounded Fan Motor
Improper Cooling A ntic ipator
Shortage of Ref rigerant
Res tric ted Liquid Line
Open Element or Limit on Elec . Heater
Dirty A ir Filter
Dirty Indoor Coil
Not enough air ac ros s Indoor Coil
Too much air across Indoor Coil
Ov erc harge of Ref rigerant
Dirty Outdoor Coil
Noncondensibles
Rec irc ulation of Condens ing A ir
Inf iltration of Outdoor A ir
Improperly Loc ated Thermos tat
A ir Flow Unbalanc ed
Sy s tem Unders iz ed
Broken Internal Parts
Broken V alves
Inef f ic ient Compress or
Wrong Ty pe Ex pans ion V alv e
Ex pans ion Dev ice Res tric ted
Ov ers iz ed Ex pans ion V alve
Unders ized Ex pansion V alv e
Ex pans ion V alve Bulb Loos e
Inoperativ e Ex pansion V alve
Loose Hold-dow n Bolts
Faulty Rev ers ing V alv e
Faulty Def ros t Control
Faulty Def ros t Thermostat
Flow rator Not Seating Properly
24
COOLING/H P ANALYSIS CHART
No Cooling
•
• • •
• • •
• • •
• • • • • •
• •
• • • •
• •
• • • • •
•
• •
• • •
• • •
•
•
• • •
•
•
• •
• •
• •
♦
•
•
•
• •
• •
•
•
•
• •
•
•
•
•
• • •
• • •
•
• • •
• •
•
•
•
•
Cooling or He ating Cycle (He at Pum p)
Sys te m
Uns atis factor y
Ope r ating
Cooling/He ating
Pr e s s ur e s
♦
♦
•
♦ • •
• •
♦
• • •
• • •
• • •
♦ •
• ♦ • •
• ♦
• ♦
•
• •
•
•
• ♦
• • •
♦ • •
• • •
• • •
• •
• •
•
•
♦ ♦ ♦ ♦ ♦ ♦
♦ ♦ ♦ ♦ ♦
♦ ♦ ♦ ♦ ♦ ♦ ♦
• •
♦
He ating Cycle Only (He at Pum p)
Te st Me thod
Re m e dy
Test V oltage
Ins pec t Fuse Siz e & Ty pe
Test V oltage
Ins pec t Connec tion - Tighten
Test Circ uits With Ohmmeter
Test Continuity of Ov erload
Test Continuity of Thermos tat & Wiring
Chec k Control Circuit w ith V oltmeter
Test Capacitor
Test Continuity of Ov erload
Test Motor Windings
Us e Test Cord
Test Continuity of Coil & Contac ts
Test Continuity of Coil A nd Contac ts
Test Control Circ uit w ith V oltmeter
Test V oltage
♦
Repair or Replac e
•
Test Motor Windings
Chec k Resis tanc e of A ntic ipator
Test For Leaks, A dd Ref rigerant
•
Remov e Res tric tion, Replac e Restricted Part
Test Heater Element and Controls
♦
Ins pec t Filter-Clean or Replace
♦
Ins pec t Coil - Clean
♦
Chec k Blow er Speed, Duc t Static Pres s, Filter
Reduc e Blow er Speed
Recov er Part of Charge
•
Ins pec t Coil - Clean
•
Recov er Charge, Ev ac uate, Recharge
•
Remov e Obs truc tion to A ir Flow
Chec k Window s , Doors , V ent Fans , Etc.
Reloc ate Thermostat
Readjust A ir V olume Dampers
Ref igure Cooling Load
Replac e Compres sor
Test Compres sor Ef f icienc y
Test Compres sor Ef f icienc y
♦
Replac e V alv e
•
Remov e Res tric tion or Replace Ex pans ion Devic e
•
Replac e V alv e
Replac e V alv e
Tighten Bulb Brac ket
Chec k V alve Operation
Tighten Bolts
Replac e V alv e or Solenoid
♦
Test Control
Test Def rost Thermostat
Chec k Flow rator & Seat or Replac e Flow rator
S-1
S-1
S-1
S-2, S-3
S-2, S-3
S-17A
S-3
S-4
S-15
S-17A
S-17B
S-17D
S-7, S-8
S-7
S-4
S-1
S-16
S-16
S-3B
S-101,103
S-112
S-26,S-27
S-200
S-200
S-113
S-114
S-115
S-104
S-104
S-110
S-110
S-105
S-110
S-21, 122
S-24
S-25
S-111