Mitsubishi Electric Mr.SLIM PC-2GAKD Technical & Service Manual page 34

7-5-3. When wired remote controller or indoor unit micro computer troubles
1.When the wired remote control or the indoor unit microcomputer has failed, but all other components work if you set the
switch (SWE, SW6) on the indoor control board, the indoor unit will begin properly
Emergency Operation.
wNote on the wireless remote control: When the remote control does not function, it is possible to activate Emergency
Operation by using the indoor unit emergency operation switch (SW1,SW2 of the wireless signal receiver board). However,
if the indoor unit microcomputer has failed, it is necessary to proceed with points 2 and 3 below as in the case of the
wired remote controller.
2.When you activate emergency operation of the cooling, you have to set the switch (SWE) and switch (SW6) on the indoor
controller.
SWE : ON • Indoor fan is running at high speed. • Drain-up machine is working.
SW6-1 : ON • Emergency operation of cooling mode
3.Before you activate emergency operation, check the following points:
(1) Emergency operation cannot be activated when:
• the outdoor unit malfunctions. • the indoor fan malfunctions.
• when it has detected the malfunction of drain-up machine during self-diagnosing.
(2) Emergency operation becomes continuous only by switching the power source on/off. ON/OFF on the remote control or
temperature control etc,dose not function.
(3) Emergency cooling should be limited to 10 hours maximum (The indoor unit heat exchanger may freeze).
(4) After emergency operation has been deactivated, set the switches etc.to their original positions.
(5) Movement of the vanes does not work in emergency operation, therefore you have to slowly set them manually to the
appropriate position.
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