I have a Myson thermostatic control in my house and for some reason it is asking me to input a PIN number before it will let me change the temperature? Unfortunately it is locked on high and you guessed we are cooking!
Its a seven day Myson programmeable thermostat MPRT

Tim, August 2011

already done that didn't work

Carol Turnbull, May 2022

where is the PIN number

Carol Turnbull, May 2022

Thank you Adam, you advice has worked!!!

Shalome, October 2021

Alright, I've figured this out.

The PIN prompt will disappear if you do a hardware reset on the device, which is performed as follows:

1. Remove one of the batteries and wait 40 seconds.
2. After 40 seconds have elapsed, re-insert the battery whilst holding down the on/off button and wait for another 40 seconds, keeping the button held down.
3. After 40 seconds have elapsed, four dashes should appear on the display. At this point, release the on/off button, remove the battery again and wait for another 40 seconds.
4. Re-insert the battery

The thermostat should then prompt you to enter the time and select the current day. Once you've done this, the thermostat should start to work as normal again.

Adam, October 2011

I'm experiencing the same problem here. Any ideas, anyone?

Adam, August 2011