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Using Thermostat
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 product, Hydro kit is generally operated 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 into 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.
- 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 does not cause in the Product.
• Emergency operation level
- When system met trouble, it stops operation and waits for user’s decision : Calling service center
or starting emergency operation.
- To start emergency operation, user simply pushes 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.
22 Hydro Kit
Dip Switch
(#4)
Target
Leaving Water
Temperature
Target
Room Air
Temperature
Target
Domestic Hot Water
Temperature
High temperature cycle OFF 70℃(158℉) 24℃(75℉) 70℃(158℉)
Low temperature cycle ON 50℃(122℉) 19℃(66℉) 50℃(122℉)
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