Canon ip1800 green light blinks once and orange light blinks three times

The following has worked on my MP470 and many other models and is worth a try on your IP1800.

If it fails there will be no harm done. This should reset the counter used to determine that the absorber is full.
Other choices: take in for repair(expensive) or clean the absorber yourself(very messy).

Waste ink full reset

These are the instructions which worked for me on my Canon pixma mp470:

1) Close the print head cover, and turn off the printer. While pressing the Resume/Cancel button, press the Power button. (Do not release the buttons. The LED lights in green to indicate that a function is selectable.)

2) While holding the Power button, release the Resume/Cancel button. (Do not release the Power button.)

3) While holding the Power button, press the Resume/Cancel button three times, and then release the Power and Resume/Cancel buttons. (Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.) During initialization, the LED blinks in green.

4) When the LED stops blinking and lights in green, press the Resume/Cancel button the 4 times. (Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.)

5) Press the Power button. The LED lights in green, and the
selected function is performed. (When the operation completes, the printer returns to the menu selection mode automatically.)

6) Power off then back on and test.

With the alarm light blinking, that could mean different errors depending on how many times the lamo blinks. Please refer to the link below for a canon document. Hope this could help.
http://support-ph.canon-asia.com/contents/PH/EN/8200187300.html#10

my canon ip1980 will not print.blinking 3 times orange light and 1 green

reset your printer if you try you can i will give you 6 tips

Here this manual way step by step to resetting waste ink counter on printer canon iP4000.

1. With the printer plugged in and powered off, press and hold the Resume/Cancel button, then press and hold the Power button. Do not release the buttons. The LED light should be green to indicate that a function is selectable.
2. While holding the Power button, release the Resume/Cancel button, do not release the Power button
3. While holding the Power button, press the Resume/Cancel button 2 times, and then release both the Power and Resume/Cancel buttons. Each time the Resume/Cancel button is pressed, the LED lights alternately in orange and green, starting with orange.
4. When the LED light is green, press the Resume/Cancel button 4 times. Each time the Resume/Cancel button is pressed, the LED lights alternately in orange and green, starting with orange.
5. Press the Power button. The LED lights in green, and the reset is performed. When the operation completes, the printer returns to the menu selection mode automatically
6. Press the power button to exit service mode.

see you can where is blinking orange light

Try to use another cartridge (borrow from another printer first)
This should fix your problem, I hope.

canon ip1980 green and orange light blinks alternately.

If consumables are all replenished, your printer should work properly.

1. Turn off printer
2. Hold down Resume button and press Power button.
3. Keep holding down Power button and let Resume button go.
4. Press Resume button 2 times then let BOTH buttons go.
5. Green lights will flash and then stop blinking.
6. When green lights are solid, press the Resume button 4 times.
7. Press the Power button and the printer should turn off, if not,
press the Power button once more.
8. Your printer should respond as normal..

First off, How many times does it flash organge before it goes to green?

two: out of paper
three: paper jam
four: Ink has run out
Five: FINE cartridge cannot be found
Seven: FINE Cart. not installed in correct position
Eight: Ink absorber almost full

Count how many times it flashes. Then get back to me

When it blinks 4 times orange it means that your ink has run out. You should replace the ink cartridge.