Unit On/Off Button; Auto Restart Function; Custom Cord Switching Procedure - Mitsubishi SRK50ZHX-S Technical Manual

4.2 Unit ON/OFF button

When the remote control batteries become weak, or if the remote control is lost or malfunctioning, this button may be used to turn the
unit on and off.
(1) Operation
Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off.
(2) Details of operation
The unit will go into the automatic mode in which it automatically determines, from room temperature (as detected by sensor),
whether to go into the cooling, thermal dry or heating modes.
Function Room temperature
Operation mode
Cooling About 24ºC
Thermal dry
About 25ºC
Heating About 26ºC

4.3 Auto restart function

(1) Auto restart function records the operational status of the air-conditioner immediately prior to be switched off by a power cut, and
then automatically resumes operations after the power has been restored.
(2) The following settings will be cancelled:
(a) Timer settings
(b) HIGH POWER operations
Notes (1) Auto restart function is set at on when the air-conditioner is shipped from the factory. Consult with
your dealer if this function needs to be switched off.
(2) When power failure ocurrs, the timer setting is cancelled. Once power is resumed, reset the timer.
(3) If the jumper wire (J170) "AUTO RESTART" is cut, auto restart is disabled. (See the diagram at right)

4.4 Custom cord switching procedure

If two wireless remote controls are installed in one room, in order to prevent wrong operation
due to mixed signals, please modify the printed circuit board in the indoor unit's control box
and the remote control using the following procedure. Be sure to modify both boards. If only
one board is modified, receiving (and operation) cannot be done.
(1) Modifying the indoor unit's printed circuit board
Take out the printed circuit board from the control box and cut off jumper wire (J171)
using wire cutters.
After cutting of the jumper wire, take measures to prevent contact with the other the lead
wires, etc.
(2) Modifying the wireless remote control
(a) Remove the battery.
(b) Cut the jumper wire shown in the figure at right.
Fan speed Flap/Louver Timer switch
setting
Auto Auto Continuous
Jumper wire (J170)
Jumper wire (J171)
9
- -
Unit ON/OFF button
Cut