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Technical data
Installer reference guide
285
ERRA08~12E + EL23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05
Q1DI
Earth leakage circuit breaker (30 mA) (field supply)
Q1
Thermal overcurrent protector
R1~R9 (A1P)
Resistor
R1T
Thermistor (outdoor air)
R2T
Thermistor (compressor discharge)
R3T
Thermistor (compressor suction)
R4T
Thermistor (air heat exchanger, liquid pipe)
R5T
Thermistor (air heat exchanger, middle)
R7T
Thermistor (injection)
R11T
Thermistor (fin)
RC (A1P)
Signal receiver circuit
S1NPH
High pressure sensor
S1PH, S2PH
High pressure switch
S1PL
Low pressure switch
SEG* (A1P)
7‑segment display
TC (A1P)
Signal transmission circuit
V1D~V3D (A1P)
Diode
V1R~V2R (A1P)
Diode module
V3R~V5R (A1P)
Insulated Gate Bipolar Transistor (IGBT) power
module
X1M
Terminal strip
Y1E
Electronic expansion valve (main)
Y3E
Electronic expansion valve (injection)
Y1S
Solenoid valve (4‑way valve)
Y2S
Solenoid valve (low pressure bypass)
Y3S
Solenoid valve (hot gas bypass)
Y4S
Solenoid valve (liquid injection)
Z1C~Z10C
Noise filter (ferrite core)
Z1F~Z5F (A1P, A2P)
Noise filter
Legend in case of V3 models:
A1P
Printed circuit board (main)
A2P
Printed circuit board (noise filter)
A5P
Printed circuit board (flash)
BS1~BS4 (A1P)
Push button switch
C1~C4 (A1P, A2P)
Capacitor
DS1 (A1P)
DIP switch
F1U
Field fuse (field supply)
F1U~F4U (A2P)
Fuse (T 6.3 A / 250 V)