MULTI VRF-Ⅱ INDOOR UNIT SERVICE MANUAL EUROPEAN/LATIN AMETICA (R410A)
59
In parameter query status, signals of the remote controller are invalid.
5.1.6 Engineering Parameter Settings
Engineering parameters can be set in power-on or power-off status.
(1) Press and hold the “FUNCTION” button for five seconds. The temperature area displays “C00”.
Continuously press the “MODE” button for three times, and then press and hold the
“FUNCTION” button for five seconds to enter the engineering parameter setting interface. The
temperature area displays “P00”.
(2) Select a parameter code by pressing “ ” or “ ”. Press the “MODE” button to switch to parameter
value settings. The parameter value blinks. Adjust the parameter value by pressing “ ” or “ ” and
then press the “ENTER/CANCEL” button to complete settings.
(3) Press the “ENTER/CANCEL” button to return to the upper-level menu till quitting parameter settings.
In the engineering parameter setting interface, users can also set user parameters listed in Table 3.2.
The engineering parameter setting list is as follows:
Table 2.4 Engineering Parameter Setting List
00: standby after
power-down recovery
01: restoring the
original status after
power-down recovery
Historical fault
clearing for IDU
Historical faults of all IDUs
controlled by the current wired
controller are cleared.
Environment
temperature
sensor settings
for IDU
01: temperature sensor
of air return vent
02: temperature sensor
of wired controller
03: temperature sensor
of air return vent for
cooling, dehumidifying,
and air supply;
temperature sensor of
wired controller for
heating
04: temperature sensor
of wired controller for
cooling, dehumidifying,
and air supply;
temperature sensor of
air return vent for
heating
When there are master and slave
wired controllers and the
temperature sensor of wired
controller is used, only the
temperature sensor of the master
wired controller is used by default.
Note:
1) In automatic mode, the
environment temperature sensor
settings are invalid for a common
IDU but the setting value is
memorized.
2)The environment temperature
sensor settings are invalid for a
fresh-air IDU. The temperature
sensor of air return vent is used by
default.
Corrected value
of environment
temperature
sensor of IDU
(for cooling,
dehumidifying,
and air supply)
Temperature
sensor of unit:
0°C ; temperature
sensor of wired
controller: 0°C
Press “ ” or “ ” to add or reduce
by 1°C .
Corrected value
of environment
temperature
sensor of IDU
(for heating, fast
heating, and air
warming)
Temperature
sensor of unit: -
2°C ; temperature
sensor of wired
controller: 0°C
Press ” ” or ” ” to add or reduce
by 1°C .
The temperature sensor of unit and
the temperature sensor of wired
controller share the same corrected
value.
In heating mode, corrected value of
temperature sensor of unit =
corrected value of temperature
sensor of wired controller - 2°C.
Press " " or " " to add or reduce
by 10%.
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