141
Check the circulation water flow.
Does circulation water flow maintain
at least the recommended flow?
Check the piping system of circulation water.
(Pump, Strainer, Valves)
Check the Water Out temperature
of circulation water.
Is Water Out temperature more than 3℃?
- Check the defect of Water Out temperature sensor.
- Make sure the Water In temperature is lowered.
Check the EVA In/Out temperature.
Is EVA In/Out temperature
maintain below zero?
- Check the control status of EEV.
- Check the EVA In/Out temperature sensor.
- Check the Water In temperature.
Yes
No
Yes
No
No
Yes
4-4-93
Emergency Error (Check the Water Piping Equipment)
Indoor unit display
Cause of problem
• Heating / Hot water operation of xxx Hydro Unit : There is no change in the water temperature.
Criteria
• More than 2 hours Heating / Hot water operation : Water In temperature does not change more than 5℃.
Outdoor unit display
↔ XXX (xxx : Address of Indoor Unit that error occurred))
1. Inspection Method
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