11) Anti Freeze Mode (Dip Sw4-4 On - Mitsubishi PWFY-P100VM-E-BU Data Book

In a system that includes PWFY-P100/P200VM-E1-AU, if the operation of the pump is interlocked with the operation of
the air conditioning units AND if the Solenoid valve kit (PAC-SV01PW-E) is connected to the system, connect the wires
as shown in [Fig. IV.3.(10).3]. Set Dip SW3-6 to ON, and make sure that the version of the software is 1.18 or later.
[Fig. IV. 3. (10).3]
TB141A OUT1
52P
1
F: Fuze
52P: Magnetc contactor for heat source water pump
MCB: Crcut breaker
WP: Water pump

(11) Anti freeze mode (Dip SW4-4 ON)

Anti freeze mode is to prevent water pipe from freezing.
The Anti freeze mode can set the heating temperature range between 10ºC~45ºC enabling the unit to maintain low water
temperature to prevent water pipes from freezing.
Board
L
F
AC220V ~ 240V
L
2 3
TB1
N
PWFY
Solenoid
N valve kit
TB2
- 62 -
AC220V ~ 240V
or
DC30V or less
L N
MCB
52P
WP