Goodmans ASX - Manual (Page 33)

33
TROUBLESHOOTING CHART
Co m p lain t
Sys te m
Op e r atin g
Pr e s s ur e s
P OS SIBLE CAUSE
DOTS IN ANALYSIS
GUIDE INDICATE
"P OS SIBLE CAUSE"
SYMPTO
M
Syste
m
will n
o
t sta
rt
Co
m
p
re
sso
r will n
o
t sta
rt -
fa
n
r
u
n
s
Com
p
. and Cond. F
an will
not star
t
E
v
apor
ator
fan
will not star
t
Condenser
fan w
ill not star
t
Com
p
ressor runs - goes off on overl
oad
Com
p
re
ssor
cycles on over
load
S
ystem
runs conti
nuousl
y
- l
it
tl
e cool
ing/htg
T
oo cool
and then too warm
Not cool
enough on warm
days
Certai
n areas too cool
, others too warm
Com
p
re
ssor
is noisy
S
ystem
runs - bl
ows col
d
ai
r i
n
heati
n
g
Un
it will n
o
t te
rm
in
a
te
d
e
fr
o
st
Un
it will n
o
t d
e
fr
o
st
Low sucti
on pressure
Low head pressure Hi
gh sucti
on pressure
Hi
gh head pressure
Te st Me thod
Re m e dy
S
ee S
e
rvi
ce P
rocedure R
e
f.
Pow er Failure • Test V oltage S-1
Blow n Fus e • • • Ins pec t Fuse Siz e & Ty pe S-1
Unbalanced Pow er, 3PH • • • Test V oltage S-1
Loose Connec tion • • • Ins pec t Connec tion - Tighten S-2, S-3
Shorted or Broken Wires • • • • • • Test Circ uits With Ohmmeter S-2, S-3
Open Fan Ov erload • • Test Continuity of Ov erload S-17A
Faulty Thermos tat • • • • Test Continuity of Thermos tat & Wiring S-3
Faulty Transf ormer • • Chec k Control Circuit w ith V oltmeter S-4
Shorted or Open Capacitor • • • • • Test Capacitor S-15
Internal Compres s or Overload Open • ♦ Test Continuity of Ov erload S-17A
Shorted or Grounded Compress or • • Test Motor Windings S-17B
Compress or Stuc k • • • ♦ Us e Test Cord S-17D
Faulty Compress or Contactor • • • Test Continuity of Coil & Contac ts S-7, S-8
Faulty Fan Relay • Test Continuity of Coil A nd Contac ts S-7
Open Control Circ uit • Test Control Circ uit w ith V oltmeter S-4
Low V oltage • • • Test V oltage S-1
Faulty Evap. Fan Motor • • ♦ Repair or Replac e S-16
Shorted or Grounded Fan Motor • • Test Motor Windings S-16
Improper Cooling A ntic ipator • • Chec k Resis tanc e of A ntic ipator S-3B
Shortage of Ref rigerant • • ♦ • • Test For Leaks, A dd Ref rigerant S-101,103
Res tric ted Liquid Line • • • • • Remov e Res tric tion, Replac e Restricted Part S-112
Open Element or Limit on Elec . Heater ♦ ♦ Test Heater Element and Controls S-26,S-27
Dirty A ir Filter • • • • ♦ Ins pec t Filter-Clean or Replace
Dirty Indoor Coil • • • • ♦ Ins pec t Coil - Clean
Not enough air ac ros s Indoor Coil • • • • ♦ Chec k Blow er Speed, Duc t Static Pres s, Filter S-200
Too much air across Indoor Coil ♦ • Reduc e Blow er Speed S-200
Ov erc harge of Ref rigerant • • • ♦ • • Recov er Part of Charge S-113
Dirty Outdoor Coil • • • ♦ • Ins pec t Coil - Clean
Noncondensibles • • ♦ • Recov er Charge, Ev ac uate, Recharge S-114
Rec irc ulation of Condens ing A ir • • • Remov e Obs truc tion to A ir Flow
Inf iltration of Outdoor A ir • • • Chec k Window s , Doors , V ent Fans , Etc.
Improperly Loc ated Thermos tat • • Reloc ate Thermostat
A ir Flow Unbalanc ed • • Readjust A ir V olume Dampers
Sy s tem Unders iz ed • • Ref igure Cooling Load
Broken Internal Parts • ♦ Replac e Compres sor S-115
Broken V alves • • • • Test Compres sor Ef f icienc y S-104
Inef f ic ient Compress or • ♦ • • Test Compres sor Ef f icienc y S-104
Wrong Ty pe Ex pans ion V alv e • • • • • • ♦ Replac e V alv e S-110
Ex pans ion Dev ice Res tric ted • • • • • • • Remov e Res tric tion or Replace Ex pans ion Devic e S-110
Ov ers iz ed Ex pans ion V alve • • Replac e V alv e
Unders ized Ex pansion V alv e • • • • • Replac e V alv e
Ex pans ion V alve Bulb Loos e • • Tighten Bulb Brac ket S-105
Inoperativ e Ex pansion V alve • • • Chec k V alve Operation S-110
Loose Hold-dow n Bolts • Tighten Bolts
Faulty Rev ers ing V alv e • ♦ ♦ ♦ ♦ ♦ ♦ Replac e V alv e or Solenoid S-21, 122
Faulty Def ros t Control • ♦ ♦ ♦ ♦ ♦ ♦ Test Control S-24
Faulty Def ros t Thermostat ♦ ♦ ♦ ♦ ♦ ♦ ♦ Test Def rost Thermostat S-25
Flow rator Not Seating Properly • • • Chec k Flow rator & Seat or Replac e Flow rator S-111
•
Co olin g o r He ating Cycle (He at Pu m p )
♦
C OOLIN G/H P AN ALYS IS C H AR T
No Co oling
Un s atis facto r y
Coo lin g /He ating
He atin g Cycle Only (He at Pu m p )