Sinclair SCV-1400EB, Service Manual

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82
5.7 E9 Troubleshooting
Digital display output
Description

Water flow failure.

E9 indicates water flow switch error. When E9 error occurs 3 times in 60 minutes, manual system restart is required before
the system can resume operation.
 All units stop running.

Error code is displayed on main PCB and user interface.
Possible causes

The wire circuit is short connected or open.
 Water flow rate is too low.

Water flow switch damaged.

Damaged main PCB.
Procedure
E9
Water flow switch connection on main PCB
is loose
1
Yes
Ensure the switch is connected properly
No
Water flow is insufficient
Yes
Check the water piping and valves. Make
sure the water piping is clean, there is no
air in the water piping and all valves are
open. Make sure the water pump capacity
is enough.
No
Water flow switch is damaged
Yes
Replace the water flow switch
No
Replace main PCB
Notes:
1. For SCV-750EB and SCV-1400EB, Water flow switch connection is port CN114 on the slave PCB (labeled 12 in Part 4, 2.7 Slave PCB component).
2. For SCV-900EB and SCV-1800EB, Water flow switch connection is port CN8 on the main PCB (labeled 38 in Part 4, 2.2.1 Main PCB component).