Climaveneta CVM2 0.0 on display

[eskimko]

Dear all,

I have problem with one Climaveneta heat pump HRAN 0071, year of manufacture 2001, R22.
Problem is that on CVM 2 display/keybord is showing 0.0. And machine does not start to work,
checked remote on/off digital input (OK), processor is reacting to switching operation mode cooling/heating mode, but compressors does not start, no metter if I select heating or cooling mode. I think that I have checked everything, probes NTC pressure, pressure probe, flowswitch, setpoint, type of machine (heat pump air cooled), nothing helps, Set point was 12, i setted it to -5, but nothing happens.

Any ideas?

[anil130]

check on this address perhaps it may help you: http://www.climaveneta.it/

[Grizzly]

Hi eskimco.
You seem to have covered everything.
With a 00 showing, I would expect the chiller to be in remote off mode.
But you say you have checked terminals 8 & 9.
Which are on the bottom right hand side of the board (with the transformer at the top).
With number 1 terminal being the bottom r/h terminal, ( numbers run up and then start again from bottom left hand side!
Grizzly