HOT WATER BUT NO CH

[mics]

Hi everyone , i have a ravenheat csi 85 which is giving me trouble, i have had no heating for two days , changed the batteries on rf1 got it to shake hands eveything is responding well the green and red light when i raise the temp, but the boiler will not fire up for C H .the hot taps are running very well.
please help....

 

[clf-gas]

Not been switched over to the summer setting has it.

When calling for heat does pump run, does fan run, does ignition start.


possible DV stuck.

 

[mics]

switch is in the right position fan does not run , boiler does not fire so does the motor. but as soon as there is demand for dhw the boiler fires up.