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 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.
Classified trouble
Trouble is classified two levels according to the seriousness of the problem. : Slight trouble and Heavy trouble
Slight trouble : Sensor trouble. In most case, this trouble is concerned with sensor problems. The unit is operating under emergency mode operation(level 1).
Heavy trouble : Compressor cycle trouble. Emergency mode operation(level 2) is performed by optional electric heater.
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.
※ It can not be operated, if the electric heater accessory is not installed.
DIP Switch | Target Leaving WaterTemperature | Target Room AirTemperature | Target Sanitary WaterTemperature | |
|---|---|---|---|---|
High temperature cycle | OFF | 507(1228) | 247(758) | 507(1228) |
Low temperature cycle | ON | 307(868) | 197(668) | 507(1228) |
Duplicated trouble : Option trouble with slight or heavy trouble
If option trouble is occurred with slight (or heavy) trouble at the same time, the system puts higher priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is occurred.
Therefore, sometimes sanitary water heating can be impossible in emergency operation mode.When sanitary water is not warming up while emergency operation, please check if sanitary water sensor and related wiring are all Ok.
Emergency operation is not automatically restarted after main electricity power is reset.
In normal condition, the product operating information is restored and automatically restarted after main electricity power is reset.
But in emergency operation, automatic re-start is prohibited to protect the product.
Therefore, user must restart the product after power reset when emergency operation has been running.