SAUNIER DUVAL ISOFAST, ISOMAX DIVERTER VALVE MOTOR S5720600.

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SAUNIER DUVAL ISOFAST, ISOMAX DIVERTER VALVE MOTOR S5720600.

£32.98
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SAUNIER DUVAL DIVERTER VALVE PART NUMBER S5720600
The Saunier Duval S5720600 Diverter Valve is the device that allows a combination boiler to heat both the hot water and central heating without the need for a hot water storage tank. This device is nearly always mechanical and is prone to breaking down.
Common faults that arise when the diverter valve is faulty:
1) No hot water at all (this situation has normally taken time to reach and there is normally a gradual breakdown of the diverter valve giving intermittent hot water for a period of time then reducing the temperature of the water; giving hot, then warm then aired water).
2) The radiators appear to get warm when you run a bath and the hot water at the tap is tepid.
3) It takes longer than usual for the boiler to fire when the hot water tap is turned on.
These are just a few of the common faults, your boiler maybe experiencing a different problem to the ones highlighted above but may still require this Saunier Duval S5720600.
A good way to test if the diverter valve is breaking down is to turn off the boiler for 2-3 hours then switch the boiler on but on the summer setting only (meaning the boiler should only give hot water).

Run the hot water tap at the bath (we recommend you do this if you require a bath, then you aren’t wasting energy) and leave it running for 5 to 10 minutes or until the bath is full.
While the bath is being run see if the central heating pipes under the boiler are getting hot or check if the radiators are starting to warm up if you don’t know which are the central heating pipes under your boiler.
Note the most common reason the diverter valve breaks down is contaminated system water, we recommend that the central heating water is dropped and the system flushed out before a new diverter valve is fitted as the new diverter valve will malfunction quickly if fitted to contaminated system water. The easiest way to tell if the water is contaminated, is to drain some water from a radiator or a drain valve and see if the water is black and sludgy in colour or even has dirt particals in it. If this is the case then the water needs to be cleaned via a flush. Ensure once the system is flushed that an inhibitor is added to the system water preventing this problem from re-occurring.
Please note the above is for information only and is not a diagnosis of your boiler fault, we take no responsibility for a wrong diagnosis of the fault to your boiler.
This Saunier Duval S5720600 Diverter Valve fits the following boilers:
ISOFAST F28 E/1
ISOFAST F28E
ISOFAST F35 E/1
ISOFAST F35E
ISOMAX F28 E2
ISOMAX F28 E2
ISOMAX F28E
THEMACLASSIC F24E
THEMACLASSIC F30E
THEMACLASSIC F35E
THEMACLASSIC PLUS F24E
THEMACLASSIC PLUS F30E
TWIN F28E

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If you feel there are any questions regarding this item do not hesitate to contact us on:
01977 554775