Glowworm Cxi intermittant F5 ault

[cdodds2004]

working on a 30cxi with a intermittent f5 fault cant put my finger on what causing it. reset and its fine for few days the off again. anybody got any experience of this fault.

thanks

chris

 

[galaxy_plumbing]

check cables are not loose or damaged, if i remember. was having this before with f10 as well, all fine after replaced cables

 

[Anton]

From GlowWorm fault finding guide: F5 = overheat fault
overheat stat operated.
maximum temperature exceeded.
Check thermistor connections.
faulty overheat stat connection.
Check pump is wired to appliance and not from programmer (causing no pump overrun)
Air in system with thermostat at maximum setting.