Landrover 90 na heater not working

I have a landrover 90 2.5 na the heater just stoped working in the cab all teps ok with the water changed all fuses n look ed for lose wire, but cant see owt not sure what ect to look for or test if any one as any tips or what to look for or how to test would be really great full

If you think you have power to the heater then try spinning the motor, it might be jammed with debris or just worn out.
Remove the inlet duct and you will then be able to get your fingers onto the fan and make sure it spins ok, just turning it a fraction may be sufficient.

Try powering the motor direct with two wires from the battery to the heater plug in engine bay. If that turns the fan motor then it's a wiring problem. My mates recently was that very same plug was burnt out so try the female plug to see if your getting a feed. If not then make sure the live is actually live on key turn, that's an orange/white wire in my car and it came loose from the back of the ignition barrel which caused mine not to work. So really you need to get in there with a multi meter and work your way back from the motor, or towards it from fuse box.