Troubleshooting
Samsung Electronics
79
Yes
4-3-2 Water pump & Flow Sensor error
Low flow rate error
• In case of low flow rate in 30 sec during water pump signals is ON(Starting)
• In case of low flow rate in 15 sec during water pump signals is ON(After Starting)
• Refer to how to determine below
Wired remocon display
Criteria
Cause of problem
No
Re-start after put the connetor in the PBA.
Yes
1. How to check
* Water pump is detected only during operation
Flow Sensor needs to be replaced.
(If water pump is running normally)
low voltage or open?
- Outdoor unit capacity ≤ 9kW : When the water flow
rate is less than 0.7V or greater than 4.5V
- Outdoor unit capacity > 9kW : When the water flow
rate is less than 0.9V or greater than 4.5V
Check water pump operates properly
Does flow Sensor connector
come out of the PBA?
Yes
After putting out the connector(F/S)
from the PBA Measure its status is
low voltage or open?
Re-start after replacing PBA.
No
Check water flow rate
Is it proper?
Yes
No
Change water flow rate to proper level
Water pump needs to be replaced
No
No
E911
▶
Water pump ON (Low flow rate) : NOT enough water flow
▶
Water flow range
Water flow rates (LPM)
Min
Max
Outdoor unit capacity ≤ 9kW
7
48
Outdoor unit capacity > 9kW
12
58
