Control And Configuration Of Dip Switches; Emergency Operation - Daikin Altherma M ECH2O Series Installation And Maintenance Instructions Manual

8 x Errors, malfunctions and messages
Fig. 8-4 Components in the heat pump outdoor unit (simplified sche-
matic)
a Plate heat exchanger (condenser)
b Fan motor
c Fin heat exchanger (evaporator)
e Filter
f Electronic expansion valve
g Shut-off valve (fluid line)
h Service valve with maintenance connection (gas pipe)
i Accumulator
k Refrigerant compressor
n 4-way switch valve (—> heating, ····> cooling)
R1T Feed temperature sensor
R2T Outlet temperature sensor (refrigerant compressor)
R3T Fluid line temperature sensor
R4T Return flow temperature sensor
R5T Centre fin heat exchanger temperature sensor
S1PH High-pressure switch
S1NPH Pressure sensor
A Outdoor unit water inlet valve
B Outdoor unit water outlet valve
C Diaphragm expansion vessel
D Filter
E Pressure relief valve
F Vent valve
G Flow sensor FLS
H Circulation pump
J Flow rate switch
Tab. 8-3 Legend for fig. 8-4
Installation and maintenance instructions
58

8.4 Control and configuration of DIP switches

WARNING!
Touching live parts can result in an electric
shock and lead to potentially fatal injuries and
burns.
● Before beginning work on live parts,
disconnect all of the systems circuits
from the power supply (switch off external
main switch, disconnect fuse) and secure
against unintentional restart.
Fig. 8-5 DIP switch setting on RoCon BM2C
● De-energise the system.
● Check the DIP switch setting on the RoCon BM2C printed
circuit board of the Daikin Altherma M ECH
necessary (see fig. 8-5).
The factory setting must not be changed.
● Close the controller housing and restore the voltage supply.
DIP switch settings are not recognised until a brief inter-
ruption to the power supply.

8.5 Emergency operation

Emergency heating operation can be maintained if the electronic
controller settings are incorrect by activating the special "Manual
Operation" function on the controller (see controller operating
instructions).
If the 3-way valves are intact, the Daikin Altherma M ECH
switches to heating mode. The required inflow temperature can
be adjusted with the rotary switch.
O, and adjust if
2
O
2
Daikin Altherma M ECH O
2
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN