Emergency Operation - LG THERMA V AHBW036H0 Installation Manual

System Set-Up
NOTICE

Emergency operation

• Definition of terms
- 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.
• Objective of introducing 'trouble'
- Not like airconditioning unit, Air-to-Water heat pump is generally operating 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.
• Classified trouble
- Trouble is classified two levels according to the seriousness of the problem : Minor Trouble and
Major trouble
- Minor trouble : Sensor trouble.
- Major trouble : Compressor cycle trouble.
- 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.
• Emergency operation level
- When system met trouble, it stops operation and wait for user's 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.
h It can not be operated, if the electric heater accessory is not installed.
High temperature cycle
Low temperature cycle
44 Air-to-Water Heat Pump
Target
DIP
Leaving Water
Switch (#4)
Temperature
OFF 50 °C
ON 30 °C
Target
Room Air Sanitary Water
Temperature Temperature
24 °C
19 °C
Target
70 °C
50 °C