When I press button for jets the light goes on but the jets don't go on.

Mike,

Yes LOC is a standard topside lock code.

Try these common unlock codes,

Press & Hold Jet Button for 6 seconds
or
Press & Hold Temp Up & Temp down for 6 seconds.

Possibly your jet button is faulty i.e. it is broken internally or when it is pressed the button sticks in the on position and locks out the panel.

If those common codes don't work let me know which brand/topside control your spa has and I will get a more specific answer.

If the topside panel is not lighting up it could be that the lights are out if everything else is working. Check from the underside of the panel to check the lights in the panel

US PARTS CENTER

Have ou gone into your menus. Into troubleshooting, then image quality.
You will want to run both the eliminate light stripes and eliminate smears procedures. that will purge the print head, blow air through the jets and hopefully resolve the problem. I do believe the 8550 has a Jet Substitutin procedure where you can do a workaround and make other jets make up for the light areas.
here are some directions, Will forward more

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Troubleshooting Print Quality Page], and then press the [OK] button.
4. Evaluate the 'Light Stripes Test' page for missing printhead jets, such as missing Cyan, Magenta, Yellow or Black color bars. The 'Light Stripes Test' page is the last page of the Troubleshooting Print Quality Page that printed.
   
   WARNING: To avoid injury, do not touch the sharp metal strip attached to the clear rubber wiper blade in the Maintenance Kit.
   
   
5. Use a clean lint-free cloth or a new paper coffee filter to gently clean the maintenance unit's clear rubber wiper blade, use only a wiping motion across the entire length of the wiper blade, and then empty the waste tray. A dirty maintenance kit wiper blade can cause white lines and weak or missing printhead jets.





6. Repeat step 3 to reprint the Troubleshooting Print Quality Pages. If there are no missing or partially missing color bars then the print quality problem has been resolved. If there are missing or partially missing color bars then the printhead cleaning procedure will need to be performed. Continue with the next section.

To clean the printhead using the basic eliminate light stripes procedure:

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
4. Press the [Up] or [Down] arrow button to select [Basic], and then press the [OK] button. The printer will perform a head cleaning, which will take about five minutes. The printer will then print a cleaning page and a light stripes test page.
5. Repeat steps 1 - 4 one more time. If there are no weak or missing jets then the print quality problem has been resolved. If there are still weak or missing jets after two basic light stripe cleanings, continue with step 6.
   
   NOTE: Do not try the Advanced Eliminate Light Stripes Cleaning mode without performing two basic cleanings first.
   
   To clean the printhead using the advanced eliminate light stripes procedure:
   
   
6. Press the [Up] or [Down] arrow button to select [Advanced], and then press the [OK] button.
7. Select the missing jet color and number. If necessary, check the light stripes test page to determine the color and jet number of the missing jet.
   
   NOTE: Only perform the advanced light stripe cleaning once. If weak or missing jets still persist, continue with step 8.



8. Print the Troubleshooting Print Quality Page. Evaluate the Light Stripes Test page for missing printhead jets, such as missing Cyan, Magenta, Yellow or Black color bars. If necessary, perform the basic eliminate light stripes procedure one more time. If the Advanced Eliminate Light Stripes procedure does not resolve the weak or missing jets, perform the Enable Jet Substitution Mode. See the Related Items below.

After the red light goes off, press the trigger on the steam release pipe and the steam will jet out.

Hold down the tv and power button until it turns red
Then press play once the light will blink once it stops if the t.v. has not turned on press again then continue until the tv turns on.
Press reverse until tv turns off
Hold down stop until light goes off

If you have the machine for three years then I would say the the print head is coming to the end of its life, there are two solutions,

1. Follow the instructions below and activate the jet substitution mode.

2. Get someone to remove the print head and clear the blocked jet manually.

Note: The print heads on these machines are very expensive so if you have to replace it, just buy a new machine as it will be cheaper then replacing this part!

Jet Substitution Mode Make Printable E-mail this page

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
4. Press the [Up] or [Down] arrow button to select [Turn Jet Substitution Mode Off], and then press the [OK] button.
   
   NOTE: If the 'Turn Jet Substitution Mode Off' option is not displayed, the Jet Substitution mode is not enabled.
   
   
5. Press the [Up] or [Down] arrow button to select [Exit], and then press the [OK] button to return to the main menu.

Do they flash in series? Like ten flashes then a pause then ten flashes?

1. Turn the key to “Run,” but don’t start
2. Press “ENG MET” on the Trip
the engine.
Monitor. Then, within five seconds,
press it again.
3. Within five seconds, press and hold
“GAUGES” on the Trip Monitor. The
“CHANGE OIL” light should flash.
4. Hold the “GAUGES” button until the
“CHANGE OIL” light stops flashing
and goes out. This should take about
ten seconds.
When the light goes out, the monitoirs
reset. If the monitor doesn’tr eset, turn the
ignition off, then try again.

Here are the directions to enable and disable Jet Substitution. This may very well help.
Some of the print head jets will not unclog for you. If that does not work then most likely the print head needs to be replaced.

o enable the Jet Substitution mode:

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
4. If necessary, select [Print Light Stripes Test] to make a Light Stripes Test print that shows any weak or missing jet and its jet number.
5. Press the [Up] or [Down] arrow button to select [Jet Substitution Mode], and then press the [OK] button.
6. Press the [Up] or [Down] arrow button to select the color for the weak or missing jet, and then press the [OK] button to select the color.
7. Press the [Up] or [Down] arrow button to select the number of the weak or missing jet (1 to 309), and then press the [OK] button to confirm the selection.
   
   NOTE: If necessary, press the [Up] or [Down] arrow button to select [Save Change and Select Another Jet] to substitute more jets.
   
   
8. Press the [Up] or [Down] arrow button to select [Save Change and Exit] and then press the [OK] button to complete the procedure.
   
   

To disable the Jet Substitution mode:

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
4. Press the [Up] or [Down] arrow button to select [Jet Substitution Mode], and then press the [OK] button.
5. Press the [Up] or [Down] arrow button to select [Turn Jet Substitution Mode Off], and then press the [OK] button.

Try the jet substitution mode.
Here are the instructions.

To enable the Jet Substitution mode:

1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
4. If necessary, select [Print Light Stripes Test] to make a Light Stripes Test print that shows any weak or missing jet and its jet number.
5. Press the [Up] or [Down] arrow button to select [Jet Substitution Mode], and then press the [OK] button.
6. Press the [Up] or [Down] arrow button to select the color for the weak or missing jet, and then press the [OK] button to select the color.
7. Press the [Up] or [Down] arrow button to select the number of the weak or missing jet (1 to 309), and then press the [OK] button to confirm the selection.
   
   NOTE: If necessary, press the [Up] or [Down] arrow button to select [Save Change and Select Another Jet] to substitute more jets.
   
   
8. Press the [Up] or [Down] arrow button to select [Save Change and Exit] and then press the [OK] button to complete the procedure.