LG AHNW09806A0 Betriebsanweisung

- Trouble : a problem which can stop system operation, and can be resumed temporally under

limited operation without certificated professional's assist.

- Error : problem which can stop system operation, and can be resumed ONLY after certificated

professional's check.

- Emergency mode : temporary heating operation while system met Trouble.

- Not like airconditioning product, Air-to-Water heat pump is generally operation in whole winter

season without any system stopping.

- If system found some problem, which is not critical to system operating for yielding heating

energy, the system can temporarily continue in emergency mode operation with end user's
decision.

- Trouble is classified two levels according to the seriousness of the problem : Slight Trouble and

Heavy trouble

- Slight Trouble : a problem is found inside the indoor unit. In most case, this trouble is concerned

with sensor problems. The outdoor unit is operating under emergency mode operation condition
which is configured by DIP switch No. 4 of the indoor unit PCB.

- Heavy trouble : a problem is found inside the outdoor unit. As the outdoor unit has problem, the

emergency mode operation is performed by electric heater located in the indoor unit.

- Option Trouble : a problem is found for option operation such as water tank heating. In this

trouble, the troubled option is assumed as if it is not installed at the system.

- When system met trouble, it stops operation and wait for userʼs decision : Calling service center

or starting emergency operation. 

- To start emergency operation, user simply push ON / OFF button once more.

- Two different levels are prepared for emergency operation : High temperature cycle and low

temperature cycle.

- In emergency operation mode, user can not adjust target temperature.

High temperature cycle

OFF

50

°C

Low temperature cycle

ON

30

°C

24

°C

19

°C

70

°C

50

°C

DIP

Switch

Target

Leaving Water

Temperature

Target

Room Air

Temperature

Target

Sanitary Water

Temperature