Arrived, stated Oven unit will cut out, not heating properly. no ignition light will stay on (ignition failure) unit is heating and operating now. removed covers. checked components. unit is sparking every time. 2 micro amps on flame sensor. gas pressure low at 2.5 inches. adjust up to 3.5 inches per manual. now have 3.5 micro amps on flame sensor. allow unit to heat and cycle several times. is operating well. reassemble unit. after reassembled, unit went into ignition failure. heat failure light would stay on, could heat unit sparking. removed covers again, cycled power, unit sparks but not lighting. no gas pressure to manifold. have voltage to gas valve. bad gas valve. customer also stated timer is not working. found buzzer will sound when timer is done but timer does not time down. bad timer, will order gas valve and timer. 9/4/20 Arrived on site and installed replacement gas valve and timer. tested unit and had proper functions. unit OK for use.