Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 14

(5) Wireless LAN connection function
(a) Operating conditions
When a signal of wireless LAN connection setting was received from a remote control during all air-conditioners stop
(b) Detail of operation
(i) A signal which corresponds to the signal received from a remote control is sent to air-conditioner.
(ii) A buzzer for confirmation of receipt rings.
(c) Reset conditions
When either of the following conditions is satisfied
(i) When a reception complete signal was received from interface
(ii) When an interface communication setting OFF signal was received from a remote control
(6) Outline of heating or cooling operation
(a) Operation of major functional components in heating mode
Compressor
Indoor fan
Outdoor fan
4-way valve
(b) Operation of major functional components in cooling mode
Compressor
Indoor fan
Outdoor fan
4-way valve
(7) Indoor fan motor protection
When the air-conditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300 min
lower for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.
(8) Serial signal transmission error protection
(a) Purpose
Prevents malfunction resulting from error on the indoor ↔ outdoor signals
(b) Detail of operation
If the compressor is operating and a serial signal cannot be received from the indoor control with outdoor control having serial
signals continues for 7 minutes and 35 seconds, the compressor is stopped. After the compressor has been stopped, it will be
restarted after the compressor start delay if a serial signal can be received again from the indoor control.
(9) Plural unit control – Control of 16 units group by one remote control
(a) Function
One remote control can control a group of multiple number of unit (Max. 16 indoor units). "Operation mode" which
is set by the remote control switch can operate or stop all units in the group one after another in the order of unit
(1)
No. . Thermostat and protective function of each unit function are independent.
Notes (1) Unit No. is set by SW1 on the interface PCB. Unit No. setting by SW1 is necessary for the interface only. In cases of the twin and triple
specification, it is necessary set for the master and the slave units. This can be selected by SW3. (All are set for the master unit at the
shipping from factory.)
SW1: For setting of 0 – 9, A – F
SW3: For setting of master and slave units
(See table shown at right.)
Thermostat ON Thermostat OFF
ON
ON ON(HOT KEEP)
ON
(few minutes ON)
ON
Cooling
Thermostat ON Thermostat OFF
ON
ON
ON
(few minutes ON)
OFF
SW3 setting (For interface PCB)
Switch
Unit
Master
Slave1
13
- -
Heating
Failure
OFF OFF
OFF
OFF
OFF
OFF
ON
(3 minutes ON)
Failure
OFF OFF
ON OFF
OFF
OFF
(few minutes ON)
OFF OFF
SW3-1 SW3-2
OFF OFF
OFF ON
'22 • PAC-SM-422
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