dryer runs normal for several heat cycles then displays cool and shuts down after 5 min. I checked vent and replaced coils and thermoster
Answer Jay, Your description indicates the tub sensor 304997 and spark gap 306130 are not sensing/feeling the wet clothes. The control board "thinks" the clothes are dry and then the control steps into the five(5) minute cool down cycle and shuts off. The sensor is located in side the drum just below the lint filter grille on the front bulkhead. To replace the spark gap, you will need to remove the two(2) Phillips head screws at the top of the dryer front panel, lean the panel out at the top, so access the 1/4 in. hex head screw that holds the spark gap to the front tumbler support assembly.
i have done my trouble shooting but i continue to have intermittent heating problems. the burner comes on and off for about 30 seconds each time, the igniter gives a bright amber glow. the readings I took appear to be ok from: thermal switch (001), igniter (049) , burner valves (two prong: 1.2, three prong: 556), flame sensor switch (01) and the high limit thermostat (.04 and 7.1) the gas flow is ok (unobstructed) and the vent duct is clear. your assistance is greatly appreciated. thank you.
Answer Sonny, Based on the information, and apparently you have a digital multi meter, your readings are pretty much in range, except the hi limit switch 303395 it should also have a reading of 000 "closed" circuit at room temperature and an "open"(infinite resistance) circuit when the temperature reaches 220 dgrs.F. When testing the gas valve coils, you need to let the dryer run and heat for a few minutes (10 - 15 minutes) then test the resistances. You quite often get a false reading, when the coils are "cold".
replacing part# 303395 on Maytag MDG5500aww ..one of the terminals is mark by an x...does this indicate the purple wire must be attached to this terminal? Thank you
The x does not have a significance on which way the wires are attached as this is not a directional thermostat yet it is a bidirectional.
The gas flame is short cycling. The flame stays on for 5 seconds, burns with an acceptable colored flame then shuts off then repeats the process in about 1 minute. I have done the following: Cleaned all lint and residue from all ductwork and all components in the machine. Replaced the 3 gas valve coils(AP4008890), ignitor(304970), burner assembly(AP4044019)and blower wheel(303836). The flame sensor(AP2910747) & Hi-Limit Thermostat (AP4036956) tested good continuity. Checked all wires and connections for solid contact or damage. Operated the machine with the front panel installed to assure proper air flow. The problem remains the same. What would you recommend as my next step?
Answer Hello Tony,
Of course you should check the exhaust duct first since the temperature being held in the unit can cause the issue. Beyond this you should check the following in the following order:
Gas available, igniter, radiant sensor, gas valve, hi-limit thermostat, regulating thermostat, temperature selector switch, timer, cycle selector switch, and the drive motor start switch. I know you already checked some of these in addition to changing some of these out. Obviously, the parts you have already changed are most likely not the issue. The others should have been checked in this order. One of these will be the issue. Let us know if we can assist you further.
I just replaced the coils. Could the new ones be bad. If so, can I return them?
Answer Hello Jim. If you replaced the coils already, then the igniter could be the problem. If it is weak, the flame will ignite and then when it needs to reignite, the igniter does not get hot enough. If that is the case, you will need to replace the igniter 4391996. Hope this helps.