Gree HOME GMV [233/367] Xhaust temperature protection

Gree HOME GMV [233/367] Xhaust temperature protection
Dc Inverter VRF plus Water Heater Solution Service Manual SERVICING
229
2.3 E
xhaust Temperature Protection
Exhaust Temperature Protection
Measure if the exhaust
temperature of compressor
reaches 118℃?
Measure if the
resistance of
temperature sensor
is correct?
When the exhaust
temperature of compressor is
higher than 115, check if the
corresponding liquid bypass
plug is connected through?
Replace the mainboard of
outdoor unit
Replace the corresponding exhaust
temperature sensor
Check if the corresponding liquid
bypass sub-assembly is in good
condition, e.g. if the solenoid
valve is in good condition and if
the capillary pipe is blocked?
Replace the liquid bypass sub-assembly
Check if the capacity
output of outdoor unit is
equal to the capacity
demand of indoor units?
Refer to the dial-up of indoor and outdoor unit
Repair the leakage of system pipe and
add refrigerant according to the required
volume
No
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Check if the
electronic
expansion valve is
correct
Change the outdoor unit
mainboard
Change the mainboard chip of the outdoor units
Change corresponding electronic
expansion valve sub-assy
Notes:
(1) The AC frequency conversion machine includes air-out seno
r
and shell top sensor.
(2) The temperature protection point in different machines are
different.
(3) There is no liquid refrigerant by-pass in frequency conversion
machine.
When the exhaust
temperature of compressor is
higher than 110, Whethe
r
compressor reduces its
ca
p
acit
y
?
Wh
en
th
e ex
h
aus
t
t
empera
t
ure
of compressor is higher than
102, Whether the openness
of corresponding indoor unit
electronic expansion valve is
increased?
Yes
Yes
Yes

Содержание

Скачать