Maytag Amana AVZC18, Service And Troubleshooting

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TROUBLESHOOTING
44
POSSIBLE CAUSE
X IN ANALYSIS GUIDE INDICATE
"POSSIBLE CAUSE"
Com
p di
sc
har
ge t
em
p >
200F
Com
p di
sc
har
ge t
em
p <
105F
Com
p di
sc
har
ge S
H >
70F
Com
p di
sc
har
ge S
H <
20F
Hi
gh pr
es
sur
e >
490ps
i
Hi
gh pr
es
sur
e S
SV
< 270ps
i
Hi
gh pr
es
sur
e LS
V<
270ps
i
LS
V S
C >
12F
LSV SC
<
4
F
Low
pr
es
sur
e <
40ps
i
Reques
ted %
dem
and <
A
ct
ual
%
Reques
ted %
dem
and >
A
ct
ual
%
Repeat
ed s
top/
st
ar
t
W
eak
heat
ing
No s
wi
tc
h heat
ing
No
is
e
Inc
om
pl
et
e def
ros
t oper
at
ion
St
op oper
at
ion
Sw
eat
ing l
iqui
d l
ine
Liquid stop valve does not fully open X X X X X X X X X X
Gas stop valve does not fully open X X X X X X X X X
Line set restriction X X X X X X X X X X
Line set length is too long X X X
Blocked filter-dryer X X X X X X X X X X
OD EEV coil failure X X X X X X X X X X X X X X X X
OD EEV failure X X X X X X X X X X X X X X X X
ID EEV coil failure X X X X X X X X X X X X X
ID EEV failure X X X X X X X X X X X X X
Check valve failure – Leakage
X X X X X X X
High Pressure switch failure X
Pressure sensor failure X X X X X X X X X X X X
Suction temp sensor failure X X X X X X X X X X X X
Discharge temp sensor failure
X X X X X X X X X
Coil temp sensor failure X X X X X X
Defrost sensor failure X X X X X X
Liquid temp sensor failure X X X X
Ambient temp sensor failure X X X X X X X
OD recirculation X X X X X X X X
ID recirculation X X X X X X
Dirty OD Heat-exchanger X X X X X X X X X
Dirty ID Heat-exchanger X X X X X X
Outdoor Ambient temp is too high X X X X X X
Outdoor Ambient temp is too low X X X X X X X X X X
ID suction temp is too high X X X X X
ID suction temp is too low X X X
Mixture of non-condensible gas X X X X X X X X
OD fan motor failure X X X X X X X X X
RV failure X X X X X X X X X
RV coil failure X X X X X X X
Over charge X X X X X X X X X
Under charge X X X X X X X X X X
Leak
X X X X X X X X X X
ID failure X X X X X X X X X X X X X X X X X X
OD Control Board failure X
Compressor failure X X X X X X X X X X X X
Cooling loop is not attached
X X X
Cooling loop grease is not enough X X X
Low ID CFM X X X X X X X
Indoor Normal Temperature Operating Range: 65-85°F
HEATING ANALYSIS CHART
Outdoor Normal Temperature Operating Range: 17-62°F
Outdoor Normal Temperature Operating Range: 67-115°F / Indoor Normal Temperature Operating Range: 65 - 85°F
A
VOID CONTACT WITH THE CHARGED AREA
.
•N
EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS
50
VOLTS OR LESS
.
1. S
HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR
10
MINUTES
.
2. M
AKE SURE TO TOUCH THE
E
ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY
(
TO PREVENT FAILURE OF THE
PC
BOARD
).
3. M
EASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A
VOM
WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA
.
4. I
MMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE
,
DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT
’
S FAN MOTOR
. (I
F THE FAN BLADE ROTATES BY
STRONG WIND BLOWING AGAINST IT
,
THE CAPACITOR
WILL BE CHARGED,
CAUSING THE DANGER OF ELECTRICAL SHOCK
.)
WARNING