General Topics

Fixbear is correct. If it continues to say heating on the display and the flame goes out check the voltage at the gas valve. If you still have voltage but no flame then the valve is closing prematurely and needs to be replaced. 

I forgot, this manual explains it.  Make sure you are reading for FREEZER. https://www.partstown.com/modelManual/DEL-4SERIES_spm.pdf

These chew-able cubetts that Follet makes are sensitive to good water and maintenance.  Not knowing how old the machine is,  or how many times the gear motor has failed makes it difficult to narrow down your problem.  When one does a gear motor on a Follet,  they should be taking the whole unit apart for inspection and seal replacement.  This…

They use RTD's due to the working temp. Thermistors are not linear like a RTD is.  But RTD's have a metal resistor made with platinum and are therefore vibration susceptible. Think of the aggressive surface action that happens during cooking. And the scrubbing during a cleaning. They also drift less over time than a thermistor. If working temp is…

Where are you coming up with the error code, on one of the digital thermometers?   If so it is probably a temp probe.  Unfortunately they are sold as a sealed unit,  so replacement is required. This is  what they look like; https://www.partstown.com/jet-tech/jtd07-0623     Otherwise this may help.

Stu,  You may want to look at the plumbing of the water filters.  Some years ago I found one that the filtration was plumbed to the cooling side of a water cooled icemaker and the house water was to the ice side.  I've also found many in bypass mode.

Possible,  Yes.  Reasonable, No   You would have to replace all 4 heating elements, and change the jumpers on the control transformer.  The elements are about $1200 each.  Being it is a kit it may be all four, but you would have to call on that.   Alternately one could install a transformer to supply it.  Probably for less money. The 208 version…

https://www.partstown.com/modelManual/HT-C-SERIES_iom.pdf https://www.partstown.com/modelManual/HT-C_pm.pdf

Cleanliness of this oven is important to air flow.  And they often have a air pressure switch that controls the heat.  But give us a model for more info.

I don't have any idea of what type of a machine you have,  but if the light is in the door, The power to it has to go through a flex at the hinge.  They often break wires at that point.