Readout is flashing a series of dash marks, and will not stop. I just put in a new battery

At least two free manuals are online, that might suggest how to change the batteries. I could not reach the manufacturer web site, that was reportedly under maintenance, but you might need to contact the manufacturer for assistance if the manuals don't help.

https://www.manualslib.com/manual/69881/Honeywell-Rth230b.html

http://homeappliance.manualsonline.com/manuals/mfg/honeywell/rth230b.html

Honeywell Programmable Electronic Thermostat Installation and User Guide...

http://www.pc4cracked.com/2017/07/malwarebytes-premium-3-1-2-crack-2017

This is a bad earth connection . Run a new cable from the battery to the engine or transmission , then run a cable from the engine or transmission to the body . No more trouble.

HI,
The is a screw behind readout Read out unit which we can see through a hole. Remove the the screw and detach out the back cover. Remove the battery wire for the socket and dismadle the battery. Buy a new battery with the same specification and install the new battery. Reattach the back cover and put the screw back.
OK

take alternator off and take to local part store they can check for free

your battery is bad. Happened to me a month ago. I checked the alternator, it was fine. I put a new battery in ,and has been trouble free. I had no warning, other than it was the factory battery and it was5 years old.

try turning the key on and letting it flash for 15-20 minutes... it should stop and then you can start it. I usually put a battery on a jumper cable so it does not kill yours while doing that. (just a battery you don't need to jump to a running car)

Turn the Furnace off, Disconnect the R and W thermostat wire from the control board located usually in lower compartment of furnace, the blower
is usually mounted behind it.

Make sure the 2 wires you disconnect are going to
R(usually power) and W(usually Heat) other terminal
markings are y(for cool) g(for fan). After Disconnecting the R and W wires Turn the furnace
back on. You will probably have to hold a door switch
in to complete the circuit. If everything is correct the
furnace should not run.

This is more than likely that you have the R and W
wires touching eachother and you need to get them seperated.

If you have the Mossimo that is an analog and gisital andhas the four (4) buttons around the side, here is what I have:

Legend:
Button near the number 10 = A
Button near the number 8 = B
Button near the number 2 = C
Button near the number 4 = D

Switch Control/Normal Readout:
Press:
A = E.L. Backlight
B = Mode
C = For Month Date and Day of Week
D = For Alram Time

Setting Sequence:
1. In normal time readout, press B three times to get normal setting mode.
2. Press D once; Minute flashing, Press C to advance.
3. Press D once: Hour flashing, Press C to Advance (A on display = AM, P = PM)
4. Press D once: Date flashing. press C to advance.
5. Press D once: Month flashing, press C to advance.
6. Press D once: Day of Week flashing, press C to advance.
7, Press B once: Setting completes - returns to normal time readout.

Alarm Setting Times:
1. In noraml time readout press B twice, Alarm Time hour flashing, Press C to advance.
2. Press D once: Alarm Time minute flashing, Press C to advance.
3. Press B once:Setting Completed, returns to normal time readout.

Alarm Function
1. In normal time readout, arm alarm by pressing C and D simultaneously. Alarm signal will appear.
2. In normal time readout disarm alram by pressing C and D simultaneously. Alarm signal will disappear.
The alarm will stop itself after 1 minute or can be silenced by pressing D or press C with snooze feature - will re-alarm in 5 minutes for the next hour.

Chime:
1. In normal time readout, chime activated by pressing D and B simultaneously. All day flag appears.
2. In normal time readout, inactivate chime by pressing D and B simultaneously. All day flags disappears.

Chronograph:
1. In normal time readout, press B once to get into 'Chrono" mode. Pressing C will start the counting.
Two Options for "Chrono" mose:
a. Durning coutning, pressing C will stop count and then press D to reset the mark.
-Or-
b. During counting, pressing D will enter teh watch into laptime mode, meaning 1 portion of the count is registered on the display while the counting contiues until completed by pressing C, then D twice.

hit the origin button the p will go away