Arrived on site customer stated that they have a leaking relief valve and one zone seems to not be producing heat properly. Upon inspection found signs that the expansion tank had failed in result the relief valve began to leak. Recommend replacement of both safety features on the boiler. It appears the smaller 3/4” zone is not producing heat and the circulator pump is extremely hot indicating that it may be air bound. Recommend purging both zones to remove air before performing any further diagnostics. Replaced expansion tank, relief valve, and purged both zones. Tested work and everything appears to be in working order and there appears to be no leaks at this time. Payment will be collected over the phone. Office gave permission.
