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No. Parts Items Estimation standard
6
high
pressure
oil return
capillary
the high pressure
capillary form oil
segregator is
blocked by weld
during compressor running, temp. after
oil return capillary is rather high
(higher than ambient temp.)
7
spraying
capillary
Spraying and oil
return capillary from
accumulator to
suction pipe is
blocked by weld
open SV3 to check if the capillary temp.
is going down
8
electric
heater
if it can work
normally
1. start to heat after being electrified
2. if Toil≥40ºC, close; if Toil≤35ºC ,
startup
9
TD discharging temp. sensor , 3-core,
red
10 TOIL oil temp. sensor, 2-core, black
11 TA ambient temp. sensor, 3-core, yellow
12 TS suction temp. sensor, 2-core, blue
13
sensor
check sensor
position
TE defrosting temp. sensor, 2-core,
green
14
pipe
assembly
If there is strong
vibration during
running
check if the pipe is in touch and rub each
other
15
fan and
motor
If the voice is normal
during running
check if the motor or the fan fault
Remark：When welding, cool the valve against being damaged
Part 2
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