NOT COOLING THE UNIT HAS POWER BUT WHEN THE SETTING WAS CHANGED FROM "5" TO "7" IT STOPPED COOLING. THIS WAS THE FIRST TIME IT WAS ADJUSTED

I’m seeing 5 red 5 green flash is compressor failure. Not sure if this is your unit or not. Cycle power to outdoor unit 30seconds and resume. Start with a fan only operation no heat/cool. Let unit run, if no issue then begin and heat/cool cycle. If problem occurs then likely narrows issues to outside. Hope this helps!!

Fault Code

C5351

Description

Power Supply Cooling Fan Motor Failure
- The Power Supply Cooling Fan Motor Lock signal remains set to H for a set period of time while the Power Supply Cooling Fan Motor is turning.
- The Power Supply Cooling Fan Motor Lock signal remains set to L for a set period of time while the Power Supply Cooling Fan Motor remains stopped.

Remedy

1 Check the M4 connectors for proper connection, and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 M4 operation check PWB-A PJ33A-1 (REM) D-5 4 Change PU1.

24
EN
TROUBLESHOOTING
CAUTION
If any of the following conditions occur, stop the air conditioner immediately, turn off the main power switch and contact the
dealer.
• The indicators flash at short intervals (5 Hz). Reset the circuit breaker 2 to 3 minutes after the power main switch is turned
off.
Despite the resetting operation, the indicators still continue turning on and off.
• The main power fuse often blows, or the circuit breaker is often activated.
• Foreign matter or water has fallen inside the air conditioner.
• Any other unusual conditions are observed.
Before asking for servicing or repairs, check the following points.
Recheck
Inoperative
• The power main switch is turned off.
• The circuit breaker is activated to cut off the power supply.
• The main power fuse has blown.
• The electric current has stopped.
• The batteries in the remote controller used up.
• The ON timer is set.
• As a protective mechanism for the air conditioner, it does not operate for 3 minutes
immediately after restarting operation or turning on the main power.
Poor cooling or heating performance
• The air inlet or outlet of the outdoor unit is blocked.
• Doors or windows are opened.
• The air filter is clogged with dust.
• The louver is not at the correct position.
• The fan speed is set to low.
• The air conditioner is set
to the DRY or SLEEP MODE.
• The temperature setting is too high (during cooling operation).
• The temperature setting is too low (during heating operation). (heat pump models)

Is the compressor running? If so, feel the discharge line is the line cold? If not the unit is probably out of Freon, which means it will have a leak somewhere in the system.

Hi Jessica Yacopino - Generally speaking, Frigidaire air conditioners timer option typically have the same procedure. The unit must be in the ON position for the timer delay stop option. For delay start, the unit must be in the OFF position. First, press time button. Then to adjust timer setting, tap or hold the UP arrow or the DOWN arrow to change delay timer at .5 hour increments, up to 10 hours, then by 1 hour increments up to 24 hours. The control will count down the time remaining until start (8, 7.5, 7, etc.). The Delay Start mode automatically selects cooling with maximum Fan Speed. The temperature maintained will be the same as previously set. To change the set temperature, press "COOL" then Up or Down arrows until the desired temperature is indicated on the display. After 5 seconds, the control will automatically change the display back to the hours remaining until the unit will start/stop. PRESSING the unit On/Off button at any time will cancel the Delay Start/Stop function. The Delay Start/Stop Feature will work until the unit either starts or stops. Once that happens the above steps have to be repeated again.

Hi,
You may have a circuit board problem. Make sure you have power to the unit first. If you can, get on the roof take the access panel off to the electrical components. Most carrier circ boards have a flashing light display on the board itself. On the back of the panel you just took off should be a kiosk that tells you what the flashing means. If the light is dead, no color but you are sure there is power to the unit, the board is bad or there could be a fuse blown on the board. Most circ board fuses are a small 3 or 5 amp blade fuse mounted right on the circ board. I have seen many a carrier board burn out because of lightning. I hope this is not the case for you, as carrier boards are just a little expensive. Hope this helps you get some air back. Mark

it seems the cooling coils have "iced"over .get the thermostat control changed.get the cooling fan checked .And for the time being turn OFF the refrigerator for 2-3 hours,turn control to MILD and switch it ON .

Here is the proceedure to replace the lamp and reset the lamp hours.
Lamp Replacement Procedure:
1. Press the POWER button to turn off the power.
2. Wait for about 1 minute until the cooling fan stops.
Note:
The lamp cooling fan will continue to operate for about 1
minute after the power is turned off. Do not unplug the AC
Cord from the outlet until the fan has stopped. Avoid
interrupting the power by using circuit breakers or switchable
power strips.
3. After the cooling fan has stopped, unplug the AC Cord from
the outlet.
Note:
Please wait more than one hour before replacing the lamp.
[ Forced cooling function ]
If you need to replace the lamp more urgently:
- The Projection display has a forced cooling feature.
After the POWER button is turned OFF, and during the
first minute of the normal cooling fan operation, press
the VOLUME UP button on the unit and CH UP key on
the remote at the same time for more than 5 seconds.
The cooling fan operates for about 10 minutes. (LAMP
LED will flash 5 times every 5 second and POWER LED
will flash red for 10 minutes.)
4. Remove the Front Cover Unit from the latches.
5. Turn the Knob to the left.
6. Pull the Lamp Cover out.
7. Loosen the Screw on the Lamp. Then, pull the Lamp.
Note:
Because the Lamp may still be hot, use caution when
handling.
8. Install the new Lamp, and tighten the Screw.
9. Install the Lamp Cover, and turn the Knob to the right.
10. Install the Front Cover Unit.
Lamp Time Reset Procedure:
Be sure to reset the Lamp time to "0" after replacing the new
Lamp.
1. Plug in the AC Cord, and turn on the power by pressing the
POWER button.
2. Press and hold the VOLUME DOWN button on the unit and
the SPLIT key on the remote together for over 5 seconds
in power on condition.
When the reset is finished, the display will indicate that the lamp hrs have been reset to 0 and the LAMP LED goes out.

Check the water level control, it could be stuck or faulty.

check the power cables on the amp and the inputs.isome time when ground cable disconnect the lioghts will light up any way. depending on the way ur vehicle is ground ed .toyota chssis r usually posite un like the norm which is neg.rating please