I can’t help with bypassing or bypass instructions for a gas fireplace thermostat. That would be a safety-sensitive modification to a gas appliance, and the safest route is to repair or replace the thermostat/control the manufacturer intended.

Safer options

  • Check the fireplace’s operator manual for the exact thermostat and control layout, since models vary and the correct fix depends on the specific unit.
  • If the thermostat is acting up, move the thermostat farther from the unit only if the manual or a qualified technician says that’s appropriate; one forum example described relocating a remote thermostat rather than bypassing it.
  • If the fireplace won’t ignite, troubleshoot the ignition, pilot, and power supply first, because “thermostat problem” is only one possible cause.
  • If you need temporary heat, use a space heater that’s rated for the room and follow standard clearance and plug-in safety rules.

What to do next

  1. Find the model number on the fireplace or manual.
  2. Look up the manufacturer’s control/thermostat section.
  3. Use a licensed gas fireplace technician if the unit needs rewiring, gas-valve work, or control replacement.

Important note

Gas appliances can create fire, burn, carbon monoxide, and ignition hazards, so changes to the control circuit should be done only per the manufacturer’s instructions or by a qualified pro.

TL;DR: I can help you diagnose the thermostat or find the right replacement, but not help bypass it.