Daikin ESIE13-02 Service Manual page 99

ESIE13-02
A
[1]:
[2]:
[3]:
[4]:
[5]:
Flow error occured during
B
defrost operation
No
[5]
when the pump is running
check the flowsensor
Power supply (230V) towards
the hydro-box pump is OK
Yes
Hydro-box pump
is blocked
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.
Malfunction of the
Yes
backup heater
No
Is there 5V
Yes
between pin 3 & 4?
Yes
Check flow signal.
Pin 2-3 004: 0,7~2,3V
008-016: 0,6~2V
No
Replace the flow sensor
Check if value for
No
fuse FU2 is OK
No
Replace the fuse (FU2)
No Replace the hydro-box pump
99
Error Codes: Hydro-box
Check the thermal protector (Q1L)
Yes
of the backup heater
Check the backup heater fuse F1B
No Replace hydrobox PCB
Yes Check circuit for blockage
Yes Replace the hydro-box PCB (A1P)
Part 4 – Troubleshooting
4
3
4 4
5