12-9
CONTROL SYSTEM
SM DLSDCI 3-A.1 GB
The following combinations show the allowed and not allowed capacity group:
ODU Model
Communication channel
Is it allowed capacity group?
Indoor Capacity
0
1
2
3
4
AB (GCD36 DCI)
Single
No
No
No
No
Yes
AE (4HP DCI 3-Phase)
Single
No
No
No
No
Yes
AF (5HP DCI 3-Phase)
Single
No
No
No
No
Yes
AG (6HP DCI 3-Phase
Single
No
No
No
No
Yes
AO (YBD042/5HP DCI)
Single
No
No
No
No
Yes
AP (YBD060/6HP DCI)
Single
No
No
No
No
Yes
AS (YBDE018 DCI)
Single
No
No
No
Yes
No
AT (YBDE024 DCI)
Single
No
No
No
No
Yes
AU (YBDE030 DCI)
Single
No
No
No
No
Yes
Capacity group
Capacity Code
Non Connected unit
0
0
1.0
1
1.5
2
1.7
3
2
4
3
12.3.4
Temperature Measurements
12.3.4.1 Thermistors default value.
Thermistor
Default value
System Reaction
COOL
HEAT
OCT
1°C
1°C
(1)
OAT
43°C
6°C
CTT
43°C
43°C
HST
75°C
75°C
OMT
43°C
43°C
Replaced by OCT
(1)
RGT
43°C
43°C
RLT
43°C
43°C
ICT
43°C
43°C
RAT
SPT+4°C
SPT-4°C
Notes:
(1) Whenever both OCT and OMT are faulty the compressor will be forced to OFF.
(2) Thermistor is defined as faulty (shorted/disconnected) if it’s faulty for more than 10 seconds continuously.
During this time, the system uses the last valid temperature
12.3.4.2 The following thermistor faults are detected by the system:
Thermistor
Thermistor is Disconnected
Thermistor is Shorted
OCT
Temp < -35 °C
Temp > 75 °C
OAT
Temp < -30 °C
Temp > 75 °C
CTT
Temp < -30 °C
Temp > 130 °C
HST
Temp < -30 °C
Temp > 125 °C
OMT
Temp < -30 °C
Temp > 75 °C
RGT
Temp < -30 °C
Temp > 75 °C
RLT
Temp < -30 °C
Temp > 75 °C
ICT
Temp < -30 °C
Temp > 75 °C
RAT
Temp < -30 °C
Temp > 75 °C
