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Technical data
Installer reference guide
198
ERLA EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1B – 2021.10
English
Translation
On/OFF thermostat (wireless)
ON/OFF thermostat (wireless)
Ext. thermistor
External thermistor
Heat pump convector
Heat pump convector
Position in switch box
English
Translation
Position in switch box
Position in switch box
Legend
A1P
Main PCB
A2P
* ON/OFF thermostat (PC=power circuit)
A3P
* Heat pump convector
A4P
* Digital I/O PCB
A5P
Bizone PCB
A6P
Current loop PCB
A8P
* Demand PCB
A10P
Main user interface PCB
A13P
* LAN adapter
A14P
* Optional user interface PCB
A15P
* Receiver PCB (wireless ON/OFF thermostat)
CN* (A4P)
* Connector
DS1 (A8P)
* DIP switch
F1B
# Overcurrent fuse backup heater
F1U, F2U (A4P)
* Fuse 5 A 250 V for digital I/O PCB
K1M
Contactor backup heater
K6M
Relay 3-way valve bypass
K7M
Relay 3-way valve flow
K*R (A4P)
Relay on PCB
M2P
# Domestic hot water pump
M2S
# 2-way valve for cooling mode
PC (A15P)
* Power circuit
PHC1 (A4P)
* Optocoupler input circuit
Q1L
Thermal protector backup heater
Q3L, Q4L
# Safety thermostat
Q*DI
# Earth leakage circuit breaker
R1H (A2P)
* Humidity sensor
R1T (A2P)
* Ambient sensor ON/OFF thermostat
R2T (A2P)
* External sensor (floor or ambient)
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