HYDROBOX900 Troubleshooting Guide

HYDROBOX900 failure and solution

NRO

Fault performance

Fault reason

Diagnostic methods

Solution

1

Pump failure alarm

Short circuit in control panel or motor

Displays 【OLP】

1.Check whether there is any component damage on the surface of the control board. If so,please replace the control board.

2.Use a shaking meter to measure the winding resistance of each phase of the motor. If the winding resistance is low, the motor shall be repaired or replaced.

2

No pressure sensor detected

Displays 【OS】

1.Check pressure sensor and control panel plug and socket

2.Check the cable arrangement of the pressure sensor

3.Check the pressure sensor

4.Replace the pressure sensor if necessary

3

The water system pressure exceeds the security value

Displays 【OCP】

1.Check whether the actual pressure exceeds 9.9Bar. If so, please reduce the actual pressure.

2.Check whether the data of the pressure sensor is unstable. If so, please replace the pressure sensor.

4

The power supply voltage is low.

Displays【LU】

Check whether the power supply voltage is lower than 160V. If so, please increase the voltage before use.

5

The power supply voltage is too high.

Displays 【OU】

Check whether the power supply voltage is higher than 250V.If so, please lower the voltage before use.

6

Communication between the drive board and control board is faulty

Displays 【EAA】

1.Check whether the plug and socket on the control board are firmly inserted.

2.Check whether the driver board cable is falsely connected.

3.Please replace the drive board if necessary

7

The motor input power is out of phase

Displays 【EP】

1.Use a multimeter to check whether the driver board output three-phase power supply is normal. If an exception occurs,please replace the driver board.

2.Use shaking meter to check whether the motor three-phase winding is normal, if abnormal, the motor needs to be replaced.

8

Motor stall

Displays 【OSP】

After the water pump is powered off, restart it. If the fault persists, need return for inspection.

9

Pump Stuck

Displays 【EH】

1.Check whether the impeller in the pump is deformed, and replace the guide vane of the impeller if necessary
***This damage usually has two reasons***
1. cavitation damage caused by inlet blockage, which is manifested as deformation of the impeller near the motor side, and intact impeller far from the motor side;
2.Pump sealing pump (such as leakage can not stop, the valve is not related to the strict can not stop, the wrong use of manual mode is not stopped, etc.) caused by overheating and overpressure deformation of the impeller, manifested as far away from the motor side of the impeller deformation, close to the motor side of the impeller intact.

2.Check whether there are other impurities in the pump stuck impeller, if necessary,please clean up.

3.Check whether the pump body is frozen and lock the main impeller, if so, please do the  melting operation before use.

10

Leakage in the pump system

Displays 【LL】

1.Check whether there is leakage in the outlet pipe of the pump, if necessary, please repair the leakage point

2.If the leakage point cannot be repaired, set parameter 【F017】 to 【0】 to cancel water leakage protection

11

Water shortage at pump inlet

Displays 【LP】

1.Check for water shortage at pump inlet, if so, please resolve water shortage.

2.Check whether there is gas in the pump inlet, if so, please solve the bubble problem before use.

3.Check whether the inlet pressure of the  pump is too low (the pipe is blocked or the inlet pressure is too high), and adjust the inlet pipe type if necessary.

4.Check the water shortage pressure data of parameter F002 ，so that the set data is lower than the normal inlet pressure.

12

Pump running with insufficient pressure

Setting pressure in automatic mode is too low

Check the set pressure

Elevate the setting pressure

13

Setting the speed in manual mode is too low.

Check the speed

Increase the setting speed

14

Cavitation at pump inlet

When turning down or closing the outlet valve, the pump pressure returns to normal

1.Check whether the inlet pipe is blocked, and clear the blockage.

2.Check whether the inlet water temperature is too high ，and lower the water temperature to below 55℃.

15

There is gas in the pump

Open the exhaust screw after stopping the pump, and no water can be observed in the exhaust port

Re-exhaust filling the pump, if necessary, need to repeatedly start and stop the pump and filling the pump.

16

Excess Flow

When turning down the outlet valve, the pump pressure returns to norma

Reduce the water using point, so that the water supply does not exceed the pump design flow rate.

17

Pump not started

Pump power supply is abnormal

Check whether the power socket of the water pump is powered on

Repair main power supply

18

In automatic mode, the water pump is in hibernation state

Press   to check whether the water pump is started

Press    to check whether the water pump is started

19

In automatic mode, pump inlet pressure is higher than starting pressure

Increase the setting pressure

Set the correct pressure data and adjust the parameter F001，so that making the pump inlet pressure less than 【setting pressure-F001】.
***For example, if the pressure is set to 3Bar and the pump inlet pressure is set to 2.3Bar, the data of F001 must not exceed 0.7(Bar) .Ensure that inline pressure 2.3 is less than 3-F001.***

20

In manual mode, the pump is not running

Press     to check whether the water pump is started

Press   to check whether the water pump is started

21

Pump Non-stop

In automatic mode, the outlet valve is not closed

Check outlet valve

Close outlet valve

22

In automatic mode, the system leaks

After closing the water point and pump, observe whether the pressure decreases

1.Check whether there is leakage in the outlet pipe of the pump.If necessary, please repair the leakage point.

2.If the leakage point cannot be repaired, it can be corrected by adding the parameter F006, but ensure that F006<F001.

3.Slightly increase parameter F008

23

The pump check valve cannot close in automatic mode

Remove inlet line and check whether  the check-valve is operating properly

Remove the impurities to make check valve sensitive

24

There is gas in the pump

Open the exhaust screw after stopping the pump, and no water can be observed in the exhaust port

Re-exhaust filling the pump, if necessary, need to repeatedly start and stop the pump and filling the pump.

25

The pump automatically starts and stops when there is no water

There is leakage at the pump outlet

After closing the water point and pump, observe whether the pressure decreases

1.Check whether there is leakage in the outlet pipe of the pump. If so, please repair the leakage point.

2.If the leakage point can not be repaired,could set the pressure data by using the parameter F001，making the set pressure data minus F001, close to the inlet pressure (slightly higher than the inlet pressure)
***For example, the inlet pressure is 2bar, the starting  pressure is 3bar, and the F001 data should to be set at 1.1bar***

26

The pump starts and stops under water condition

Excessive inlet pressure

Increase the setting pressure or lower inlet pressure

1.Increase the set pressure data

2.Reduce inlet pressure appropriately

3.Lower the parameter F008 appropriately

27

Other pump control disorders

Wrong adjustment of parameters

-

Set F007 to 1 to restore factory Settings