A faulty or dirty ignition or sensor is a relatively easy fix so follow these steps and you may be able to solve the problem yourself.
Perfection wall furnace will not heat up pilot light on.
The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite.
The pilot light in your gas furnace supplies heat to your home.
Its main function is to ignite the burners when the furnace is called upon for heat.
On newer furnaces rather than a standing pilot light that is always on an electronic signal turns on an intermittent pilot ip when it receives a signal from the thermostat.
If the pilot light will not stay lit it needs to be fixed asap to supply heat to your home and for safety reasons there are numerous things that may make the pilot light on your furnace to not stay lit.
How to troubleshoot gas wall heaters.
An operational pilot light in your furnace means safety from the possibility of a gas leak.
Problems with the intermittent pilot ip.
The thermocouple assists with furnace operation by monitoring the presence of the flame and turning off the gas supply to the pilot light if it should become extinguished or becomes weak.
Gas wall heaters whether vented or unvented can supply enough heat to warm a small or medium sized room and they can operate with propane or natural gas.