Checked MDM Convection Oven unit and found not lighting. removed burner and checked ignitor, ok, powered unit on and spark was good on ignitor. turned gas on and tested. found no flame to pilot. checked gas pressure, unit would cycle and gas would show 4-5 in wc and drop out. went and picked up gas valve and returned and installed new valve. tested operation, no gas pressure so checked wiring, ok. tested voltage to module and had 28 v. checked voltage out of module, found it would show 24 v and drop out. will need new module. 3/6/21 Returned with module and gas valve. removed old module and defective gas valve and installed new module and gas valve. checked operation and set gas to 3.5 in wc. tested oven for all operation ok. also found that the conveyor belt adjuster need replaced will quote repairs.