The timer light keeps flashing and unit does not respond to the on by cooling the room when the on button is pressed

fujitsu is a good brand.
try one of these two things:

Turn the unit off then on again. After that press test button on remote control (rear side) and look how many times now operation and timer LED flashes. Note that. Then press MANUAL/AUTO button on indoor unit until you hear 3 beeps from buzzer. That will erase error memory.
Switch off and than on unit and see if indication repeat or it is gone. If it is gone, keep using your unit.
If it is repeated post your notes here.

OR+++++++++++++++++++++FOR OTHER MODELS

5 x Operation flash and a constant Timer flash indicates an outdoor unit control error. With this code flashing on the indoor unit, you need to point the remote at the unit and push the test run button. The flash pattern will change to a continuously flashing Operation light and a number of flashes of the timer light which gives more detail on what the error is.

To get the unit to try to restart you need to push and hold the manual/auto button on the indoor unit for a few seconds then reset the mains power supply but leave it off for a minute or so for the unit to power down completely. If you are going to try this make sure you make a note of any error codes first if you have to get someone out to look at it, it will help them a lot.

Please mark this answer helpful.

Operation =
Flashing Display Timer = Yes
Turbo =
LED Display = E1
Explanation and Checking points = Indoor unit room thermistor error - Open or Closed Circuit - Check and replace if required

Operation = Yes
Flashing Display Timer = Yes
Turbo =
LED Display = E2
Explanation and Checking points = Indoor unit pipe thermistor error - - Open or Closed Circuit - Check and replace if required


Operation =
Flashing Display Timer =
Turbo = Yes
LED Display = E3
Explanation and Checking points = Indoor unit fan motor malfunction - Check and replace if required


Operation =
Flashing Display Timer = Yes
Turbo = Yes
LED Display = E6
Explanation and Checking points = EPROM error - Check and replace PCB if required


Operation = Yes
Flashing Display Timer = Yes
Turbo = Yes
LED Display = Flashing
Explanation and Checking points = Option code error - Check and input new option code if required via wireless remote controller


Operation = Yes
Flashing Display Timer =
Turbo = Yes
LED Display =
Explanation and Checking points = Outdoor unit temperature sensor - Open or Closed Circuit - Check and replace if required

Becka did you find a solution to this problem because I have the same unit and it's doing the same thing

Dear friend. the timer problem is very common. Remove battery from remote and also remove power to unit. Again plug power on unit and start with remote and try to cancel the timer on and off. Press set.
And also cool setting must be minimum 3 degree less than room temperature. Helpful advise?

N1505 timer manual:
http://waterheatertimer.org/pdf/Woods-49122-N1506-manual.pdf

N1506 is heavy duty outdoor timer with display screen.
Plug timer in and display flashes C.
Set current time: press Time button once and display shows 1 am
Keep pressing time button until current time with am pm displays.
Dot in lower right corner corresponds to pm hours.

To set timer program:
Press Mode button, display flashes P
Press Time button until desired ON time displays.
Press Mode button again and display flashes E
Press Time button until desired OFF time displays
When programming is finished, press Mode button and display shows current time.

To reset timer, unplug timer for 10 seconds and re-program timer.
Timer must be reset after power outage. Display will warn by flashing C.

Plug lights into timer.
If lights have a switch, switch must be on.

For manual override, press Mode button, and display shows O and lights will be ON until next program change.
To use timer function, press Mode button until current hour displays.

N1505 timer manual:
http://waterheatertimer.org/pdf/Woods-49122-N1506-manual.pdf

N1506 is heavy duty outdoor timer with display screen.
Plug timer in and display flashes C.
Set current time: press Time button once and display shows 1 am
Keep pressing time button until current time with am pm displays.
Dot in lower right corner corresponds to pm hours.

To set timer program:
Press Mode button, display flashes P
Press Time button until desired ON time displays.
Press Mode button again and display flashes E
Press Time button until desired OFF time displays
When programming is finished, press Mode button and display shows current time.

To reset timer, unplug timer for 10 seconds and re-program timer.
Timer must be reset after power outage. Display will warn by flashing C.

Plug lights into timer.
If lights have a switch, switch must be on.
For manual override, press Mode button, and display shows O and lights will be ON until next program change.
To use timer function, press Mode button until current hour displays.

Lamp is not the issue. It most likely is a your DM card. You most likely have some capacitors that need to be replaced. This is a terrible issue with this unit. Do a google search for "DM" and the model number and you should see hundreds of posts.

Hold the set up button until the red light stays on on the remote. Press power until the TV responds. My sleep timer displayed after 23 presses (hotel room Magnavox TV). Stop pressing remote. The red light will then flash a few times once you stop. Problem fixed.

Try turning the main isolator off for 10 minutes to reset the system. If it doesn't clear the error, count how many times the light flashes which will give you the error code.