Troubleshooting for RA Indoor Unit
SiENBE18-621
280
Troubleshooting
4.6.4 Hall IC Check
Check No.16
1. Check the connector connection.
2. With the power ON, operation OFF, and the connector connected, check the following.
∗
Output voltage of about 5 V between pins 1 and 3.
∗
Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
Failure of (1)
,
faulty PCB
,
Replace the PCB.
Failure of (2)
,
faulty hall IC
,
Replace the fan motor.
Both (1) and (2) result
,
Replace the PCB.
The connector has 3 pins, and there are two patterns of lead wire colors.
Gr
a
y (power
su
pply)
P
u
rple (
s
ign
a
l
s
)
Bl
u
e (gro
u
nding)
White (power
su
pply)
White with
b
l
a
ck line (
s
ign
a
l
s
)
White with m
a
n
u
f
a
ct
u
rer m
a
rk (gro
u
nding)
(R1990)
1
2
3
1
2
3
Summary of Contents for BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...
