BGH Silent Air BSRBT-062CWN1-R, Инструкция по эксплуатации

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MCAC-RTSM-2012-12 R410a Tropical Rooftop Package Unit 50Hz
185
○
8 P4
：
Protection for Hi./Lo. Pressure or exhaust temp. (High pressure protection value
：
4.4MPa, High
pressure protection value
：
0.14MPa
；
air discharge temp. protection value: 130
℃
above)
○
9 Indoor fan motor don
’
t work.
○
10 Outdoor fan motor don
’
t work.
When P4 display, detect Hi/Lo pressure testing
point by pressure gauge and discharge point temp.
by thermometer. Conform if all testing values are
normal.
The main board display P4 is
normal.
Detect by multimeter if the high/low pressure
switch two sides and air discharge switch two
sides exist current circuit.
Replace high/low pressure switch
and air discharge temp. switch,
detect them again.
Detect if there exist current from main
board to indoor fan.
Replace the main board.
Detect if there exist power supply from
main board to outdoor fan.
Replace the capacitor of outdoor fan,
detect it again, if the outdoor fan work.
No
Replace the main board.
Yes
No
Replace outdoor fan.
Remove the problem
No
Yes
No
Yes
Yes
Replace the main board.
No
Replace indoor fan capacitor, detect it
again, conform if the indoor fan works.
No
Replace the indoor fan.
Yes
Remove the problem
Yes