Wiring heater and thermostat advice please

[qthisup]

Hi - we have an inline heater for a vent system that appears to always be on. I believe the electrician may have wired it incorrectly with only a 2 core wire from thermostat to heater control board. Please find attached wiring diagram and photos of the heater control board and the thermostat, would someone be able to kindly confirm the correct wiring of thermostat to heater?

 

[James]

Looks to me like the wire from terminal 12 is missing if jp1 is off
or wires 11 and 12 if jp1 is switched on.

 

[qthisup]

Looks to me like the wire from terminal 12 is missing if jp1 is off
or wires 11 and 12 if jp1 is switched on.

Thats what I was thinking. JP1 switched on appears to enable the NTC10 which is the remote thermostat. Therefore terminal 11 to Out1 on thermostat and terminal 12 to In on thermostat?

 

[James]

Also Gnd and gnd1 need to be joined at remote unit.