GHD3 / 3.1B / SS / SS2 Not Hot Enough

As not all heating elements have the same resistance, GHD designed in the ability to calibrate the temperature of the heater plates. This means that when heater elements are replaced you may need to tweak the adjustment of the VR1 variable resistor slightly.

Before you make any adjustments, please note that slight adjustments lead to large changes in temperature, so if you are not careful you could cause your GHDs to overheat and trip the thermal fuse.

On a pair of 3.1B's VR1 is located on the non switch side arm PCB here:

VR1 Location

To increase the plate temperature, turn VR1 clockwise.

To decrease the plate temperature, turn VR1 anti-clockwise.

When I do this, I put a thermocouple as shown below in between the plates and adjust VR1 until the plates measure around 180 / 190 degrees celcius:

This page was last updated at 5:37pm on 15th November 2009