Service Functions - Mitsubishi Electric MSZ-EF VE Series Service Manual

10

SERVICE FUNCTIONS

MXZ-2D33VA MXZ-2D40VA MXZ-2D42VA MXZ-2D53VA MXZ-2D53VAH
MXZ-3D54VA MXZ-3D54VA2 MXZ-3D68VA MXZ-4D72VA MXZ-4D83VA
10-1. THE POSITION OF SWITCH
MXZ-2D33VA MXZ-2D40VA MXZ-2D42VA MXZ-2D53VA MXZ-2D53VAH
SW1
ON
Outdoor display P.C. board
MXZ-3D54/3D68/4D72VA
MXZ-3D54VA2
Oudoor control P.C. board
10-2. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (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.
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
Cool/Dry
SW1
ON
OBH626E
SW2
ON
1 2 3 4 5 6
SW1
ON
SW2
ON
1 2 3 4 5 6
SW871
Heat
SW1
ON
MXZ-4D83/5D102VA
Oudoor control P.C. board
MXZ-3D54VA/3D54VA2/3D68VA/4D72VA
SW2 on the outdoor control P.C. board
Cool/Dry
SW2
ON
82
MXZ-5D102VA
Heat
SW2
ON
5 6 5 6