Two lights are flashing and the alarm is beeping

LOW / NO BATTERY ALARM
The Low/No battery alarm will activate when the
power level of the battery becomes low. The display
will alternate between "b" (Battery, See figure 8) and
the cabinet temperature, the red alarm light will
become illuminated and the control panel will beep
every five seconds. To stop the audible alarm (beep),
press the "ALARM RESET" button. The red alarm
light will remain on and the display will continue to
flash until a new battery is installed. This same alarm
will activate if there is no battery installed

your car alarm is acting up. try putting new batteries on the remote. also found this online. I dont know if its the same as your alarm but you can check it out. hope it helps

http://www.ultrastarters.com/manuals/Prev.Manuals/05_08/MAN-25XX-OWNERS-U-2005.pdf

This is usually a good situation to bring to alarm shop and have them take it out and see if you can just keep the remote start or it might need a new brain on the alarm system

Hi, some jags are fitted with dual alarms, is your alarm sounding through the main horns and flashing the lights? or are you getting a loud beeping noise.
If its beeping then its the Passive alarm system. you need to say what one it is, I am asumming its the original alrm and not aftermarket.

The beeping alarm would be for leaving the key in the ignition or the lights on. Maybe a gauge that had dropped to zero.
Let us know if it happens again and what the conditions are.

I only received part of your problem. Could you please repost the problem along with your model number.
Thank you,Richard

A beep tone will activate when selecting the HWS buzzer
alarm.
The alarm beep will become shoter and shoter every
15 seconds for one minute followed by one minute silence
before repeating the cycle.
The HWS alarm will sound for one hour until turning off by
pressing the Power button. Press the Power button whilst
the alarm is activated will cancel the alarm for 24 hours.
1. The HWS buzzer alarm can be set either radio is on or
off.
2. Press and release the HWS buzzer alarm button
, the symbol will flash.
3. During the symbol flashes, long pressing the
button for more than 2 seconds followed by a beep
and display Hour digit will flash.
4. Rotate Tuning Control to select required alarm hour,
then press time set button again. The minute
digit will then flash.
5. Rotate Tuning Control to select required alarm minute,
the press time set button again to complete HWS
buzzer alarm setting.
6. Press and hold down buzzer alarm button for
more than 2 seconds followed by a beep to switch on
or off the HWS buzzer alarm.
Display will appear when buzzer alarm has
been set.

Replace the airbag lamp in the cluster, and get the LFC ( Light Flash Code ) to figure out what the problem is with the SRS.
The 5x5 beeping is an indication that there is a SRS problem waiting and the airbag light cannot give the LFC. Page 105 in the owners manual.

Once you replace the airbag light, you will get a LFC that is a 2 digit number presented by the flashes.
Example is a LFC of 42, the airbag light would flash 4 times, pause flash 2 times pause and repeat.

Once you have the LFC, either start a new problem, or add a comment to this problem with the number for further diagnoses.

Your description sounds like the main alarm is not activated - good, the beeping and flashing light may be that the AC supply is switched off or the internal battery is needing replaced.

The AC supply may have been disturbed with the earlier work.

If in any doubt , do not operate the heating unit until your alarm is working happily.

The beeping and light indicates the need for a new battery (9v)