Daikin EHYHBH05AAV3 Service Manual page 99

ESIE13-02A
[1]:
[2]:
[3]:
[4]:
[5]:
When the pump starts (push the ON/OFF button), manometer needle moves, pump vibrations
can be detect. In case unclear perform item A.
When the pump runs, pump signal is displayed on the interface controller. The pump will run for
15 seconds before error code 7H will be displayed.
In order perform item A completely, several pump restarts can be required.
Check the installation manual for the minimum required water pressure in the system.
Check the installation manual for the external static pressure values of the different pump
speeds.
Disconnect the connector of the flow sensor on the PCB (X4A) and measure the resistance value
on the connector of the flow sensor.
At a restart of the system, the pump will operate for 15 seconds before error code occurs.
Use these 15 seconds to confirm the voltages of the flow sensor before the pump will be stopped
due to error 7H.
99
Error Codes: Hydro-box
Part 4 – Troubleshooting
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