11-6
CONTROL SYSTEM
SM FBFRPM 1-A.0 GB
11.3.7
RV Fault
This test is
a
pplied only in compressor units where 4.7k
:
resistor is not connected to
the OCT.
The test is performed every time the unit is switched from OFF/
S
TB
Y
to OPER in He
a
t
mode or ch
a
nges oper
a
tion mode from COOL/DR
Y
to HEAT or (this
a
pplies
a
lso in
AUTO COOL/HEAT mode).
If ICT is lower th
a
n 35
º
C
a
t the time of mode ch
a
nge, then
a
t the first occurrence of 15
min continuous COMP oper
a
tion, ICT is comp
a
red with ICT re
a
ding when the COMP
w
a
s switched from OFF to ON 15 min before. RV f
a
ult is defined when ICT decre
a
ses
more th
a
n 5
º
C.
In this c
a
se, the COMP will stop
a
nd the
S
B LED will blink. The f
a
ult is reset
a
fter
switching to
S
B or
a
fter mode ch
a
nge.
11.3.8 General
Features
a
. Allowed (control t
a
rget) r
a
nge for RAT is
S
PT +/-1ºC.
b. Whenever the unit is ch
a
nged from COOL/DR
Y
/
S
TB
Y
mode to HEAT mode or
vice vers
a
, the procedures below
a
re followed:
S
top COMP for 3 min
o
Ch
a
nge RV st
a
te
o
S
t
a
rt COMP if necess
a
ry.
Summary of Contents for YCF055
Page 45: ...8 2 WIRING DIAGRAMS SM FBFRPM 1 A 0 GB 8 3 Indoor Units YDF030 8 4 Outdoor Unit GCN 30NRCT...
Page 46: ...8 3 WIRING DIAGRAMS SM FBFRPM 1 A 0 GB 8 5 Outdoor Unit GCN 37NRC 8 6 Outdoor Unit GCN 37NRCT...
Page 47: ...8 4 WIRING DIAGRAMS SM FBFRPM 1 A 0 GB 8 7 Outdoor Unit YDF047 8 8 Outdoor Unit YCF055...
Page 50: ...10 2 REFRIGERATION DIAGRAMS SM FBFRPM 1 A 0 GB 10 1 2 FBF045 FBF060...
Page 92: ...14 4 EXPLODED VIEWS AND SPARE PARTS LISTS SM FBFRPM 1 A 0 GB 14 4 Indoor Unit FBF046 FBF060...
Page 109: ...15 3 OPTIONAL ACCESSORIES SM FBFRPM 1 A 0 GB 15 3 RCW RCW2 Wiring Connections as Shown on Kit...
