Mitsubishi Electric SEZ-KD VA Series, Service Manual

Page: 82 / 301

82
Outdoor display P.C. board
SW1 SW2
ON
1 2 3 4 5 6
ON
SERVICE FUNCTIONS 10
10-1. THE POSITION OF SWITCH
MXZ-2D33VA MXZ-2D40VA MXZ-2D42VA MXZ-2D53VA MXZ-2D53VAH
MXZ-3D54VA MXZ-3D54VA2
MXZ-3D68VA MXZ-4D72VA MXZ-4D83VA MXZ-5D102VA
MXZ-2D33VA MXZ-2D40VA MXZ-2D42VA MXZ-2D53VA MXZ-2D53VAH
ON
SW1
ON
SW1
Cool/Dry Heat
With this function, you can lock the operation mode of the outdoor unit.
Once the operation mode is locked to either COOL/DRY mode or HEAT mode, the air conditioner
operates in that mode only.
Default setting is required to activate this function.
Please explain this function to your customers and ask them whether they want to use it.
[How to lock the operation mode]
(1) Turn OFF the breaker and make sure that the LED goes off.
(2) Set SW1 or SW2 as shown in the figure below.
(3) Turn ON the breaker.
10-2. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
MXZ-2D33VA/2D40VA/2D42VA/2D53VA/2D53VAH
SW1 on the outdoor display P.C. board
MXZ-4D83VA/5D102VA
SW1 on the outdoor control P.C. board
ON
5 6
SW2
ON
5 6
SW2
Cool/Dry Heat
MXZ-3D54VA/3D54VA2/3D68VA/4D72VA
SW2 on the outdoor control P.C. board
MXZ-3D54/3D68/4D72VA
MXZ-3D54VA2
Oudoor control P.C. board
ON
ON
SW2
SW871
SW1
1 2 3 4 5 6
MXZ-4D83/5D102VA
Oudoor control P.C. board
OBH626E