Question 1. Was it working fine before and suddenly started overflowing? Answer.Yes Replace thermostat. Answer No Question.2.Did you turn up thermostat to get more hot water. Answer yes.Extend overflow pipe about 2ft. Answer No. Lying little shit. Extend overflow pipe 2ft.
nzjay,
Jan 26, 5:40am
it is NOT the thermostat!
becchb,
Jan 12, 3:31am
Any ideas? Landlord replaced valve and still it continued. Tried turning cylinder pressure down bit by bit, no luck, no water pressure and still running onto roof, even turning of tap that supplies the cylinder doesn't stop it over running. what now?
rotormotor7,
Jan 12, 4:04am
Sounds thermostat stuck on, as in not turning off and on to keep temp at 55°C.
Try turning off at cylinder. does meter spin round fast if not a digital
harrislucinda,
Jan 12, 12:49pm
if just been replace the land lord should be called back to check if it is his work
charie4,
Jan 12, 2:19pm
The problem is the ajax valve and you need your landlord to get a plumber in to fix it-you are losing all your hot water on to the roof.
tmenz,
Jan 12, 2:26pm
If you've turned off the tap which supplies the cold water to the bottom of the cylinder through the Ajax/Apex/Nefa valve and it's still overflowing then it may be backfeeding cold water into the hot water piping via a faulty mixer somewhere - shower, kitchen sink or basin faucet!
Is there a header tank in the roof associated with the system?
trade4us2,
Jan 13, 2:12pm
The diaphragm or inlet washer in the Ajax valve is probably perished or faulty. They are very cheap - diaphragm is about $15. The Ajax valve needs removing and taking apart. The water has to be turned off while doing that!
tmenz,
Jan 13, 2:36pm
OP mentioned in post #1 that the landlord had replaced the valve - the assumption would be that it was the Ajax/Nefa/Apex valve that was replaced, so it should be OK - unless disturbed scale and grit has fouled the washer. But OP has said that it overflows even when the tank inlet tap is turned off - puzzling.
sboydnz,
Jan 13, 7:25pm
Do you think that the landlord has fitted the Ajax/Neefa in back to front maybe?
trade4us2,
Aug 26, 6:51am
The OP doesn't say when the Ajax valve was replaced. The screw through the diaphragm can be fitted the wrong way around so that water goes through the thread and rusts the spring. Then the water comes out continuously. This is probably not the problem but does show a defect in the design of Ajax valves. The screw through the diaphragm needs a better seal no matter which way the screw is fitted.
Since the public registrations are closed, you must have an invite from a current member to be able to register and post in this thread.
Have an account? Login here.