Daikin EHSH04P30D, Инструкция по установке и обслуживанию

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8 Faults and malfunctions
Installation and maintenance instructions
43
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN
Malfunction Possible cause Possible solution
Internal circulation
pump generates ex-
cessively high operat-
ing noises Air in the water circuit.
▪ Completely vent the heating system and the internal circula-
tion pump.
Noises caused by vibrations.
▪ Check the Daikin Altherma EHS(X/H), its components and
covers to ensure they are fastened correctly.
Bearing damage in the internal circulation pump
▪ Replace the internal circulation pump.
Water pressure at pump inlet too low.
▪ On the controller [→ Main menu → Info → Overview], check
that sufficient water pressure (> 0.5 bar) is available.
▪ Check that the pressure gauge is working correctly (connec-
tion of an external pressure gauge).
▪ Check the admission pressure in the expansion tank and wa-
ter pressure; if necessary, top up the heating water and adjust
the admission pressure.
Safety pressure relief
valve is leaking or al-
ways open. Expansion tank is defective.
▪ Replace the expansion tank.
Water pressure in heating system is too high.
▪ On the controller [→ Main menu → Info → Overview], check
that the water pressure is below the specified maximum pres-
sure. If necessary, drain sufficient water until the pressure is
in the middle of the permissible range.
Safety pressure relief valve is stuck.
▪ Check the safety pressure relief valve and if necessary, re-
place it.
▪ Turn the red knob on the safety pressure relief valve anti-
clockwise. If you can hear a rattling noise, the safety pres-
sure relief valve needs replacing.
Tab. 8-1 Possible malfunctions
8.3 Fault codes
Code Component/Designation Error Possible fault rectification
E75 Inflow temperature sensor
t
V, BH
Inflow temperature sensor fault Inflow temperature sensor defective.
▪ Check, replace.
E76 Storage tank temperature
sensor t
DHW1
Storage tank temperature sensor fault Storage tank temperature sensor t
DHW1
or connecting
cable defective or not connected.
▪ Check, replace.
▪ Check the [Hot water sensor] setting.
E81 RoCon BM2C printed circuit
board Communication fault Parameter storage in the EEPROM corrupted.
▪ Contact a service technician.
E88 RoCon BM2C printed circuit
board Parameter storage in the external flash memory cor-
rupted.
▪ Contact a service technician.
E91 Connected CAN modules CAN module bus ID duplicated, set unique data bus
address.
E128 Return flow temperature
sensor t
R1
Return flow temperature sensor fault Return flow temperature sensor t
R1
in FLS flow
sensor connecting cable defective.
▪ Check, replace.
E129 Pressure sensor DS Pressure sensor fault Pressure sensor DS defective.
▪ Check, replace.