51
Description of the switch board
Function
Water Pump : Control the Water Cycle Pump
E-Heater : Control the Electrical Heater 1 and 2
NOTE!
Connect to the PCB 2 ( CN1 L-IN)
common
Terminal
(CT)
Connect
to
Connect
to
WTP1
When test or repair the machine, the compressor,
be force manual startup.
water cycle pump and outdoor fan motor can
WATER
PUMP
E- HEATER
O - WARM
WATER
I -
HEATING
ROOM
RESERVED
ROOM HEATING
WARM WATER
NORMAL
WARNING !
THE SWITCH BOARD IS FOR EMERGENCY ONLY,
AND MUST BE OPERATED BY SERVICE ENGINEER ONLY!
1
˖
The switch board is only for emergency, such as circuit boards were broken; and it must be operated by
service engineer only.
2
˖
When control systems are normal, it is forbidden to operate the switch board; the switch boards are only
available when circuit board or compressor broken; before using the switch board, it must set and ensure the
OPER. is OFF at the display.
A> NORMAL:
switch boards must keep the position as drawing then allow heat pump to runs normally.
B> ROOM HEATING:
room heating only; switch boards must keep the position as drawing then allow heat pump to heat room,
the feed water temperature is fixed with 40
ć
; before using this mode, it must set and ensure the OPER. is
OFF at the display .
C> WARMEATER:
water tank heating only; switch boards must keep the position as drawing then allow heat pump to heat
water tank, the feed water temperature is fixed with 70
ć
; before using this mode, it must set and ensure the
OPER. is OFF at the display.
,
ROOM 20
MONDAY
11:30
1
HDO
CSP
OPER.OFF
Connect
to
common
Terminal
(CT)
O-Warm Water : Control the 3 way valve turn to the Water Tank
Heating side ( B side )
I-Room Heating : Control the 3 way valve turn to the Room
Heating side ( A side )
Reserved : Invalid
The manual switch board is use only if
the necessary
for
test
or
repair.
When the heat pump
is
running
normally,
the switch board must be in normal state.
