I'm working on a Magic Chef Model T1614X Rv gas
Pilot Ignition System procedure is as follows:--
On a pilot ignition oven, there is a pilot which is an actual gas flame (although very small) in the oven. What happens in this system is that the pilot stays lit all the time and when the oven thermostat is turned on, the pilot flame extends (gets bigger) to envelope the thermocouple bulb of the oven safety valve. The thermostat controls gas flow to both the pilot and to the oven safety valve. Once the oven safety valve's thermocouple senses appropriate heat, the safety valve opens to allow gas flow to the oven burner where the pilot flame ignites the gas. The main oven burner should usually light in less than 1-1½ minutes after the pilot flame has extended to envelope the safety valve's thermocouple.
Oven not heating
On a pilot ignition system the pilot flame must be lit for the oven burner to receive gas. If the pilot will not stay lit, there may be a problem in the oven thermostat (which supplies gas flow to the pilot) or the gas tubing leading to it and/or the pilot itself may be plugged with cobwebs, grease, etc.
other pilot ignition range models, the oven thermostat knob needs to be pushed in and held before the pilot can be re-lit if it has gone out. The oven control knob may have to continue to be held in for up to a minute after the pilot has been re-lit.
If the pilot IS lit but the oven burner is not lighting, the pilot flame will need to be inspected as the thermostat is turned on. If the pilot is not extending when the thermostat is tuned to ON, the oven thermostat may be defective. If the pilot is extending but the oven gas valve is not opening, that oven safety valve may be defective or its sensor bulb may be out of position on the pilot or just dirty causing it to not sense the proper temperature of the pilot flame. A dirty pilot can also cause a reduced size pilot flame so the oven safety valve can not sense the proper temperature to open.
Observations necessary to diagnose problem
Is the pilot lit?
Does the pilot extend (get bigger) when the thermostat is turned on?
Is the safety valve's sensor properly mounted in the pilot?
Problems with the pilot light system.....The flame has gone out, re-light the pilot. The pilot flame will not light - possible oven control is not sending gas for the pilot light. The pilot light works but no main burner ignition - possible pilot assembly is dirty and the pilot flame is too small, safety valve and thermocouple is faulty, the bulb from the safety valve is out of position and the pilot flame is not touching the thermocouple bulb. Some ranges use a standing pilot light ( small flame is on all the time ) while others use an spark ignition to light the pilot light flame and the pilot light flame heats up the thermocouple bulb to allow the main gas to flow through the oven burner.
The flame needs to heat the bulb up enough to tell it to open the gas valve. Several things can go wrong here that keep this from happening:
The pilot flame may not be hot enough, usually because the flame is yellow instead of pure blue or is too small. The cause for this is usually a dirty pilot assembly. The pilot assembly would either need to be cleaned or replaced.
The thermocouple bulb may not be positioned properly in the flame. You can't heat the bulb properly if it's not in the pilot flame! The thermocouple bulb needs to be in the upper third of a pure blue pilot flame--that's the hottest part of the flame.
The thermocouple itself may be burned out. It happens. It's a internal part of the gas valve so, no, you can't just change the thermocouple bulb separate from the gas valve.
But when you turn on the oven or the thermostat calls for heat, the pilot flame gets bigger and jumps down so it can heat up the thermocouple bulb. This extra gas to increase the pilot flame size comes from the thermostat.
If the pilot flame jumps upwards or just gets bigger, but doesn't shoot down, then you need to replace the pilot assembly.
If the pilot flame size does not increase or jump down when turning on the oven thermostat, then the problem is the thermostat not sending enough gas to the pilot assembly. It's also possible that the pilot gas supply tube has a hole in it somewhere.
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Magic Chef 30...
on Jun 08, 2010