Problem Solving - Sentinel JetFlush Rapid Manuel D'utilisation Et D'entretien

EN
Section C – Troubleshooting, Service & Repair

PROBLEM SOLVING

Use the flow chart to determine any likely problem and then if necessary
undertake the simple flow test to establish if the JetFlush pump is functioning.
If the pump is circulating and dumping with a good flow rate then any problem
must be related to the heating system.
Can the motor
rotate freely with the
power OFF?
Yes
Does the motor
rotate with the
power ON?
Yes
Does water
circulate into
heating system?
Yes
Can water
circulate in both
directions?
Yes
Does the problem
only occur
when dumping?
No
Carry out following test to
establish if it is a JetFlush
Rapid problem or a heating
system problem.
Fill tank to half height.
Loop the ow and return
connections together.
Place the dump hose back
through the ller cap.
28
Jetflush Rapid Guidelines (19-02-15).indd 28
No
Check for signs of damage.
Check for obstructions/debris caught in the
No
Check fuse and power supply.
Check any extension cables/thermal cut outs.
No
Ensure JetFlush Rapid valves are set to re-circulate.
Ensure heating system isolation valves/TRVs, zone
valves are all set to open. Check for kinks in hoses.
No
There is a restriction, such as a one-way valve
within the heating system or boiler. Either loop out
restriction or just ush in one direction.
Yes
Ensure su cient water level within tank.
Check orientation of JetFlush Rapid valves, only
set one valve to dump, on the return side.
Contact Sentinel for further assistance
impellor etc.
Set both valves to re-circulate. Switch
on and check ow, then use ow
reverser to check ow direction. Then
set valve on return side to dump and
check ow. Now return valve to
re-circulate, change direction and set
other valve to dump.
If the pump is working, then the
problem is with the heating system.
If this test fails
Jetflush Rapid V1-02-15
19/02/2015 12:13