SiENBE18-621
Troubleshooting for BP Unit
Troubleshooting
301
6.2
Faulty BP Unit PCB
Remote Control
Display
E2
Method of
Malfunction
Detection
Check data from E
2
PROM
Malfunction
Decision
Conditions
When data could not be correctly received from the E
2
PROM
E
2
PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
"
Defect of BP unit PCB
Troubleshooting
T
u
rn off the power once
a
nd
t
u
rn on
a
g
a
in.
Ret
u
rn to norm
a
l?
YE
S
Caution
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
Extern
a
l f
a
ctor other th
a
n
m
a
lf
u
nction (for ex
a
mple,
noi
s
e etc.).
Repl
a
ce the BP
u
nit PCB.
(Q0
3
91)
NO
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...