Water pump issues post frost

[Joie de vivre]

Any advice please? We thought we'd drained water thoroughly by running taps until empty and leaving them in open position while having opened frost valve to drain boiler. Electricity off of course.
After a severe freeze we refilled water tank and tried to draw water through system, both bathroom tap and kitchen tap together. It took forever to get spitting water. Then flow only improved with one tap shut. Each time air seems to fill top of water column in pipes.
Where is the problem? Is water pump damaged ( because we didn't realise you have to open valve on water tank, drain, then take van for trundle) and needs replacing? Or is pipework damaged somewhere and allowing air in? If the latter, how can it be traced?
Any suggestions or diagnoses out there?
Thanks
Carolyn

 

[David and Sally]

Is your frost protect valve now closed?

The pump may have been damaged.

Have you got a surge filter that may have cracked?

Looking for damage may mean going through up boards and lockers looking for water leaks.

Good luck.

 

[KNWH]

Sounds like the filter just before the pump has cracked/split

 

[Jev88]

External pump - replace filter on side?
Internal pump - pull out and see if all blades/fins are still there on the rotor?

 

[Joie de vivre]

Is your frost protect valve now closed?

The pump may have been damaged.

Have you got a surge filter that may have cracked?

Looking for damage may mean going through up boards and lockers looking for water leaks.

Good luck.

Frost valve shut. Not sure what surge filter is.
Yes rather reluctant to do behind wall investigations until all other easier access options checked.

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[Joie de vivre]

Sounds like the filter just before the pump has cracked/split

Will check. Thanks

 

[Joie de vivre]

External pump - replace filter on side?
Internal pump - pull out and see if all blades/fins are still there on the rotor?

Ok. Pump seems to be inside water tank.

 

[Jev88]

Ok. Pump seems to be inside water tank.

I haven't played with internal pumps much but check the blades are all there and nice freely with a nudge if a screwdriver etc....

If stuck - problem found.
If spinning - is 12v reaching it?

 

[Pausim]

Ok. Pump seems to be inside water tank.

Are you getting the same problem with hot and cold water? Are both equally affected?

 

[BillyBear]

It sounds like a pump issue to me. If it is a Reich with twin motors the same as ours then it is possible that one of the motors has stopped working. You will still get water in the system but not a lot of pressure.

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[denisejoe]

You have to fill the hot water tank if the system was empty it can take a while but system should be clear after 5 minutes cold water should be quicker

 

[pappajohn]

Ok. Pump seems to be inside water tank.

Perfect opportunity to fit a proper pump on the outside of the tank.

 

[Pausim]

Perfect opportunity to fit a proper pump on the outside of the tank.

I prefer the quiet submersible type, works well enough to get a good shower and doesn’t disturb the peace and quiet.

 

[Joie de vivre]

Perfect opportunity to fit a proper pump on the outside of the tank.

Ah!

 

[Joie de vivre]

It sounds like a pump issue to me. If it is a Reich with twin motors the same as ours then it is possible that one of the motors has stopped working. You will still get water in the system but not a lot of pressure.

Seems to be what has happened.

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