I have set the thermostat to 74F. But the temperature goes down to 70F. What do I do to maintain it at the set temperature

I think it is low on gas. You will have to call the repairman on this one. If it is real old, just replace it.

Heat range: 40 to 90 degrees F
Cool range: 50 to 99 degrees F
1 degree deadband

Here's the operation guide:
https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2603EF.pdf

Please mark my answer as helpful.

I believe that the temperature control is the problem you are having. Part number=> 5303305486 Temperature Control Thermostat


Sea Breeze

Hi. This is Aaron Moratalla from White Rodgers. The clicking sound indicate the relays inside 1F86-244 are working. Say you want heat and your room temperature reading (left side of LCD) is 70F and your set Temperature (right side) is 75F. When you push the down arrow and set it from 75F to 69F or lower then you should hear the soft clicking sound. Same thing if from 69F you increase it to 71F or higher. If you don't have the clicking sound it means your thermostat could be broken. If that is the case then call our Tech Support at 800-284-2925. It's line is open M-F from 7AM to 1Am CST and Sat-Sun from 7AM to 4PM CST. Thank you for choosing White Rodgers!

Ball pythons require a daytime temperature ranging from 80-85F and a basking spot of 90F. These temperatures can be slightly decreased at night to around 74F. I would recommend buying an under tank heating pad as well as an incandescent bulb for the basking area. You will need to use a minimum of two thermostats to help monitor the tanks temperature.

Your oven sensor has gone bad and telling the control board/thermostat to keep heating. Find the model number on the range and go to a parts distributor like repairclinic.com or apdepot.com and order you sensor. This is an easy repair.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_4570d45317834dd3

The first suspect is the temperature sensor or oxidation on it's wiring connector pins. If you have an ohmeter you can measure it. It should be about 1080 ohms at 70F. As sthese ovens get older the control board tends to develop problems that cause this behavior. You can have the board rebuilt at fixyourboard.com.

at the thermostat you have a small tolerance (most have 5% + or -) few degrees is not a problem ex...70F= 21C and 82F=27C this diference is inertial, you can set a lower temperature(ex...60 F to reach 72 F) the problem is if the temperature grow and never stop until the saftey thermostat stop the heating.also is posible to have a broken thermostat(work thermostat) and in this case it must be changed whit new one or the teperature probe is plced in a wrong place.

replace the control board part# 4334000 appliance parts pros the board goes bad if light bulbs blow out and theres a surge, but freezer still freezes

hold the button on left an the up button in for five seconds this will enter program mode hit next until 70 comes on and use up dn arrows to set temp info on this stat is on their web site sorry dont have book with me