I lose pressure in the system over a 2 day period and need to top up the water. How can I find out where I am losing pressure in the Central heating system? I can not find a leak so is there a fluid that I can pour into the system that will block any small leak internally?
loss of pressure
- Thread starter chinhoyi
- Start date
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chinhoyi said:
Try checking expansion vessel pressure.
u should hav a relief pipe outside from boiler (15mm norm)tie a small bag on it to c if any water there over the 2 day pressure drop.
...or go even further, and actually check the EV.
Two common points of leaks are:
1. Rad valve joints - a tiny leak can evaporate without being noticed.
Pressurise the system when cold and check all joints.
2. PR valve - take a look at the outlet from your drain tube.
Two common points of leaks are:
1. Rad valve joints - a tiny leak can evaporate without being noticed.
Pressurise the system when cold and check all joints.
2. PR valve - take a look at the outlet from your drain tube.
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