EAS Electric ECRTH2, Operating Manual

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Content Remarks
H8 47 Pressure sensor fault
H9 48 Zone 2 water flow temp. sensor(Tw2) fault Sensor TW2
HA 49
The plate heat exchanger water outlet temperature
sensor(Tw_out) fault
Sensor Tw_out
Hb 50 3 times PP protection and Tw_out<7
℃
Hd 52
Communication fault between master unit and slave
unit(in parallel)
HE 53
Communication fault between main board of hydraulic
module and Ta/room thermostat transfer PCB
HF 54 Inverter module board EE PROM fault
HH 55 H6 display 10 times in 120 minutes
HP 57
Low pressure protection (Pe<0.6) occurred 3 times in 1
hour in cooling mode
C7 65 High temp. protection of inverter module
bH 112 PED PCB fault
F1 116 DC bus low voltage protection
L0 134 DC compressor inverter module fault
L1 135
DC bus low voltage protection(from inverter module
mostly when compressor running)
L2 136 DC bus high voltage protection from DC driver
L4 138 MCE fault
L5 139 Zero speed protection
L7 141 Phase sequence fault
L8 142
Compressor frequency variation greater than 15Hz within
one second protection
L9 143
Actual compressor frequency differs from target
frequency by more than 15Hz protection
Unit
Register
address
V.1