Heater Control - Mitsubishi Electric CITY MULTI PVFY-P12NAMU-E Technical & Service Manual

[ VII Microprocessor Control ]

5. Heater control

1. Control specifications and DIP S/W setting
Table 1 shows how the field-installed heater is controlled. Select the desired pattern in the table below, and set the DIP S/W
on the outdoor and indoor units as shown in Table 1. See section 3 "Installation" for details. The table below shows Heater
Control patterns #1, 2, and 3.
Table.1
Outdoor unit
setting
DIP S/W OFF
In the case of:
TGMU:
S/W5-2 OFF
THMU/YHMU/
TJMU/YJMU:
S/W5-10 OFF
TKMU/YKMU:
SW4: 932 OFF
PUMY:
S/W4-4 OFF
DIP S/W ON
In the case of:
TGMU:
S/W5-2 ON
THMU/YHMU/
TJMU/YJMU:
S/W5-10 ON
TKMU/YKMU:
a
SW4: 932 ON
PUMY:
S/W4-4 ON
maintenance tool.
*1. Not applicable to communication error, return air thermistor error, and motor error.
HWE1405A
Condition of outdoor unit
N / A
Normal drive
Defrost drive
H/P drive
H/P stop
b c d Outdoor temp.
a/b/c/d are set by
DIP S/W
(Indoor unit)
SW3-2 SW3-4
- OFF
OFF ON
ON ON
- OFF
Normal drive OFF ON
ON ON
- OFF
Defrost drive
H/P drive OFF ON
H/P stop
ON ON
- 16 -
PVFY-NAMU-E
Heater control
Pattern Defrost Error
#1 OFF OFF
#2 OFF ON
#3 OFF ON
#1 OFF OFF
OFF OFF OFF
OFF OFF OFF
#1 OFF OFF
#2 OFF ON
#3 OFF ON
*1
*1
*1
*1
GB