Mitsubishi Electric Mr.SLIM PEH Series Technical & Service Manual page 33

(1) Indoor coil temperature code
During the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of room
temperature. The code should fall with the lapse of time in normal COOL operation, and should rise in normal HEAT
operation.
1
Code
Indoor coil
-40~1:
temperature
9
Code
Indoor coil
~45:
temperature
(2) Trouble during test run
If the unit malfunctions during the test run, refer to section 10 in this manual entitled "TROUBLESHOOTING."
When the optional program timer is connected to the conditioner, refer to its operating instructions.
2-8 Emergency operation
When the remote controller or microprocessor malfunctions but all other parts are normal, emergency operation is avail-
able by setting dipswitch SW3 on indoor controller board.
<Before emergency operation>
1. Make sure compressor and indoor fan operate normally.
2. Locate defect point with self-diagnostic function. When the self-diagnostic function indicates "protective function is work-
ing", release the protective function before starting emergency operation.
<How to operate>
1. For emergency cooling, set dipswitch SW3-1,2,3 to ON.
For emergency heating, set dipswitch SW3-2,3,4 to ON.
emergency emergency
heating cooling
2 .3 .4 ON 1 .2 .3 ON
2. Turn ON the outdoor unit breaker and then turn ON the indoor unit breaker.
Now,emergency operation starts.
3. During emergency operation the indoor fan operates at high speed, but the swing louver does not work.
4. To stop emergency operation turn OFF the indoor unit breaker.
NOTE: The remote controller POWER ON/OFF button is not available to start/stop emergency operation.
2 3
-10: ~15:
10 11
~50: ~55:
normal
operation
1 - 4 OFF
4 5
~20: ~25:
12 13
~60: ~70:
microprocessor board
6 7
~30: ~35:
14 15
Themistor
~90:
abnormality
8
~40:
33