Daikin RTSQ20PY1 Service Manual page 178

Field Setting
3.2.2 Service Setting
Setting item
Indoor unit fan
1 forced H operation
Indoor unit forced
2
operation
Change of targeted
evaporating
3
temperature
(in cooling)
Change of targeted
condensing
4
temperature
(in heating)
Setting of defrost
5
selection
Setting of
6
sequential startup
Emergency
7
operation (*1)
8 Airtight test
Refrigerant
9
recovery mode (*1)
Vacuuming mode
10
(*1)
Power transistor
11
check mode
Setting of model
12
with spare PCB
For setting items of (*1), refer to detailed information provided on P.188 onward.
167
Content and objective of setting
Used to operate the indoor unit in the
stopped state in forced H operation mode.
Used to operate the indoor unit in forced
operation mode.
In cooling operation, used to change the
targeted evaporating temperature for
compressor capacity control.
In heating operation, used to change the
targeted condensing temperature for
compressor capacity control.
Used to change a temperature at which the
defrost operation is initiated, thus making
the initiation easy or hard.
Used to start units not in sequence but
simultaneously.
If the compressor has a failure, used to
prohibit the operation of compressor(s)
concerned or outdoor unit(s) concerned
and to conduct emergency operation of the
system only with operable compressor(s)
or outdoor unit(s).
Fully open the expansion valves of the
indoor and outdoor units, and energize part
of solenoid valves.
Used to recover refrigerant on site.
With operations of indoor and outdoor units
prohibited, fully open the expansion valve
of the indoor and outdoor units.
Used to conduct vacuuming on site.
Fully open the expansion valves of the
indoor and outdoor units, and energize part
of solenoid valves. Use a vacuum pump to
conduct vacuuming.
Used for the troubleshooting of DC
compressors.
Inverter waveform output makes it possible
to judge whether a malfunction results from
the compressor or the PCB.
In order to replace the PCB by a spare one,
be sure to make model setting.
Overview of setting procedure
Set No. 5 of "Setting mode 2" to indoor unit
forced fan H.
Set No. 6 of "Setting mode 2" to indoor unit
forced operation mode.
Select high side or low side with No. 8 of
"Setting mode 2".
Select high side or low side with No. 9 of
"Setting mode 2".
Select fast side or slow side with No. 10 of
"Setting mode 2".
Set No. 11 of "Setting mode 2" to NONE.
Make this setting while in "Setting mode 2".
For system with multiple outdoor units: Set
with No. 38, 39, or 40.
Set No. 21 of "Setting mode 2" to ON.
Set No. 21 of "Setting mode 2" to ON.
Set No. 21 of "Setting mode 2" to ON.
Set No. 28 of "Setting mode 2" to ON.
For this setting, set the DS2-2, -3, and-4
switches on the PCB to the model
concerned.
SiBE31-801_C
Test Operation