Maytag Amana VZC20, Инструкция по установке и обслуживанию

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23
POSSIBLE CAUSE
X IN ANALYSIS GUIDE INDICATE
"POSSIBLE CAUSE"
C
om
p di
sc
har
ge t
em
p >
200F
C
om
p di
sc
har
ge t
em
p <
105F
C
om
p di
sc
har
ge S
H
>
70F
C
om
p di
sc
har
ge S
H
<
20F
H
igh pr
es
sur
e >
49
0ps
i
H
igh pr
es
sur
e S
S
V
< 270ps
i
H
igh pr
es
sur
e LS
V
< 270ps
i
LS
V
S
C
>
12F
LS
V
S
C
<
4
F
Low
pr
es
sur
e <
40
ps
i
R
eques
ted %
dem
and <
A
ct
ual
%
R
eques
ted %
dem
and >
A
ct
ual
%
R
epeat
ed s
top/
st
ar
t
W
eak
heat
ing
N
o s
w
itc
h heat
ing
No
is
e
Inc
om
pl
et
e def
ros
t oper
at
ion
S
top oper
at
ion
S
w
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
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
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
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
RV failure
X X X X X X X X X
RV coil failure
X X X X X X X X X
Over charge
X 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
TXV failure
X X X X X X X X
TXV size is small
X
TXV size is big
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
Compressor and Gas furnace are operating at the same time
X X
Low ID CFM
X X X X X X X
HEATING ANALYSIS CHART
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
Outdoor normal temperature operating range: 17-62°F / Indoor normal temperature operating range: 65-85°F