Programmable A/C thermostat has power but shows no temp.

It sounds like the temp sensor is defective in the T-stat. I would replace it, get the newer programmable ones, they are very reliable and very cheap to buy online.

Frankly... "PAIRING" does NOT sound like the issue.

If you don't have your original thermostat (to go back to)... I'd suggest you push yours back over the counter... FROM WHENCE it CAME.

Perhaps to TRY ANOTHER... or buy a simple thermostat...

No bells, whistles... networks or friend cyber-neighbor (802.11 access).

Re-install it and establish that you have a well functioning & reliable system heating.

Towerstat specs indicate 434 Mhz... (below)
Being a RADIO-MAN my first inclination would be to look for
RADIO-INTERFERENCE...

BUT realistically...
why bother when there is a ton of SMART-Phone APPs that will RELIABLY provide GLOBAL remote...
(ALEXA / ECHO: talking interface)
rather than ROOM REMOTE... ??

SENSI, NEST & HONEYWELL ... just to skim the surface...??

(Sorry.. Can't help asking).

~~~

Towerstat Radio Frequency Programmable Room Thermostat - Features

• Transmitter dimensions: 116 x 100 x 23.5mm, weight 126g;
• Receiver dimensions: 91.5 x 91.5 x 42mm, weight 176g;
• Power supply: Transmitter 2 x AA(LR6) batteries;
• Receiver: 230VAC 50Hz;
• Accuracy: + / - 60 seconds / month;
• Temp. measurement: 0degC to 40degC in 0.5degC resolution;
• Temp. accuracy: + / - 10 at 20degC;
• Temperature Control: 7degC to 30degC in 0.5degC increments;
• Span: 1, 2, 3, or 40C;
• Air conditioner cycle time: 3 minutes;
• Operation temperature: 0degC to 40degC;
• Storage temperature: -10degC to 60degC;
• Operating frequency: 434 MHz.

Amazon com wifi controlled thermostat

I believe what your experiencing is the 75 degrees is the hold temp position...the display then reverts back to the actual room temperature...it doesn't mean the set temperature changed back to 65 degrees. Try to reprogram the thermostat schedules, and try not to use the hold function...just the temporary hold. (which is bumping the programmed temperature up or down until the next programmed period)

Hello

Do you have any of the extra functions selected, such as "Hi Temp Rinse" etc?
The selector switch has a selection for Hi-Temp Wash; the switch is in parallel with a thermostat mounted on the bottom of the tub and with a contact in the timer. The
selector switch, temp assure thermostat, and the temp boost thermostat are all in series with the timer motor. Both thermostats are normally open thermostats. When
the timer reaches the end of the second wash cycle, the contact in the timer supplying power to run the timer motor will open. At which time, if the selector switch for the Hi-Temp Wash has been selected, power to run the timer motor must come through the thermostats. The temperature of the water in the tub must rise to 137° ±5° F for the thermostat to close and the timer motor to advance. If the water temperature is below 137° ± 5° F, the timer will pause until the heating element raises the temperature of the water in the tub and allow the thermostat to close.

Hi-Temp Rinse
If the selector switch was a selection for a Hi-Temp rinse, the switch is in parallel with a thermostat mounted in the tub, and the contact in the timer, the same as the Hi-Temp wash. The operation for the Hi-Temp rinse will be the same as for the Hi-Temp wash with the exception, on some models, the temperature of the water in the tub will be 150° ± 5° F for the thermostat to close to give a sanitizing rinse.


What do we learn from this? That you either have a bad heater or a bad thermostat. Check the heater for continuity with our OHM meter.

Hello Try RAISING the temp setpoint in COOL mode,sometimes there is a deadband so unit will not conflict.

Hi,
When you set a temperature and then push the "hold" it will keep the temp. at that point until you manually change it.... forever....

heatman101

Turn the main unit off, take thermostat apart and change the batteries if they have them

If it is a programmable thermostat, it will only stay at a certain temp until it reaches it or on a set time, then it goes back to the scheduled program temperatures. Most programmable thermostats do have a hold feature that allows you to hold the temp to a certain setting, but if you don't set it to permanent hold, then it does what you described. Hopefully this helps some or guides you in the right direction. Good luck!

Some tstats control humidity as well. Temp will over shoot set point in order to reach humidity s

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

It sounds like you might have the same problem that we have. I read the manual and it says that thermostat has a special lock to prevent tampering. It could be locked. If you override it only last a while and goes back to its original settings. The manual says you need to contact the person who installed it. In our case the person who was in charge when when we had it installed is no longer with the company. We don't know who installed it.