Why would a Spa control panel turn on all display segments, displaying 1888. There is no other error code shown.

Try a GE Control Panel Reset

This should clear the error codes:
Power off the unit, wait 5 minutes then restore the power.
Press the broil and bake keys simultaneously and "SF" will be displayed.
Press "Hr. Down" and "Minute Down" keys simultaneously for 3 seconds, then the time of day will be displayed.
Press "Temp Up" and "Minute Up." The control panel will display the following:
Go blank briefly
Display all segments briefly
Display "LOC REF" briefly
Display all segments again for 30 seconds
Display "LOC REF"
Acknowledge the "LOC REF" by pressing the "Hour Down" and "Minute Up."
Test control pads. Oven should now function.

https://www.manualslib.com/manual/859287/Culligan-Medallist-Series.html?page=8

Quoting from link to free manual shown:

FAILURE MODE
There are certain conditions that can be interpreted by the circuit board as a failure of the drive motor or motor
position switch. Upon failure detection the control will cease further operation. A telephone hand set symbol will be
shown in the upper left corner of the display and the error code will be shown. Listed below are the different error
codes.
1. Motor Always Turning
Error code "E1" occurs when the circuit board detects changes in the motor program switch when the motor is
not supposed to be turning. The phone icon and "E1" will be lit in the display.
2. Motor Never Turns
The Culligan Medallist Series control is equipped to detect no change in the motor position when the motor is
supposed to be turning (motor or piston locked in a frozen position). The AccuSoft circuit board will apply
power to the motor for 20 seconds. If there is no change in the motor homing or position switch, the control will
power down for 1 minute. The circuit board will repeat this procedure two more times in an attempt to remove the
obstruction. If no movement has been detected, the control will permanently power down and a phone icon and
an "E2" will appear in the display.
3. Homing Error
Error code "E3" occurs when the circuit board detects when the control is unexpectedly in the home position.
The phone icon and "E3" will be lit in the display.
Error Display Cancellation
The error code display can be removed by removing the power to the control for 1 minute. After clearing an error
condition, the control will default to the factory settings when power is restored.

What should I do if code E90 appears on - Intex ' Frequently ...

www.intexcorp.nl/faqsup/pub/FaqSupportServlet?action...

Jan 19, 2015 - What should I do if code E90 appears on my air bubble spa control panel? ... If alarm code E90 is displayed on the control panel, it means no ...

a flashing display is how samsung shows error codes. try and draw a picture of which segments of the display is flashing. think of the figure 8 and then try to show which part of the 8 is being shown. that is how we can tell what error code needs fixed.

E61 means you have the neutral and the L2 wire either reversed or in the wrong position. ENTER TEST MODE SEQUENCE by doing the following . 1.Disconnect thepower for 30 seconds.2.Reconnect the power and within 30 seconds press the sequence of buttons listed below.3.Press the "SIGNAL"button.4.Press the "DELAY START"button.5.Press the "SIGNAL"button.6.Press the "DELAY START"button. Now after you have fixed the reveresed wiring problem you will need to remove the fault code fromt he memory otherwise the machine will not work. To remove the fault code do the following ENTER TEST MODE
SEQUENCE (cont.)
You will notice "t01". To choose the test mode that you want toverify, turn the knob to the desired test mode setting.
Push the start/pause button.To cancel the test mode, press on "power".
You will be able to choose another test mode and again press on "start/pause".
The display error codes test allows the service technician to examine and clear the fault log.
DISPLAY ERROR CODES TEST
(t02)
The display error codes test allows the service technician to examine and clear the fault log.
The control shall display the most recent error in the fault logupon entry into the display error codes test. If there are no errors in the fault log, the no error code "E00"shall be displayed on the 7-segment display.
The control shall clear the displayed error from the fault log if the start key is pressed during the display error codes test. After clearing thedisplayed error from the fault log, the appliance shall display the next most recent error from the fault log.
After clearing all errors from the fault log, the control shall display the no error "E00"code on the 7-segment display.
The control shall log the last 8 error codes in the non-volatile memory stored in a circular list.
The control shall avoid logging multiple instances of the same error code. now unplug the appliance for about 30 seconds and replug and everything should be fine



credit to the original author of this solution rcadieux4444

If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

Sorry to read about your problem, I hope this helps you out.

you should have a electrician work on your wiring, with luck no further damage has happened, E61 means you have the neutral and the L2 wire either reversed or in the wrong position.

ENTER TEST MODE SEQUENCE by doing the following . 1.Disconnect the power for 30 seconds.
2.Reconnect the power and within 30 seconds press the sequence of buttons listed below.
3.Press the "SIGNAL"button.
4.Press the "DELAY START"button.
5.Press the "SIGNAL"button.
6.Press the "DELAY START"button.

Now after you have fixed the reveresed wiring problem you will need to remove the fault code fromt he memory otherwise the machine will not work. To remove the fault code do the following ENTER TEST MODE
SEQUENCE (cont.)
You will notice "t01". To choose the test mode that you want toverify, turn the knob to the desired test mode setting.
Push the start/pause button.To cancel the test mode, press on "power".
You will be able to choose another test mode and again press on "start/pause".
The display error codes test allows the service technician to examine and clear the fault log.
DISPLAY ERROR CODES TEST
(t02)
The display error codes test allows the service technician to examine and clear the fault log.
The control shall display the most recent error in the fault logupon entry into the display error codes test. If there are no errors in the fault log, the no error code "E00"shall be displayed on the 7-segment display.

The control shall clear the displayed error from the fault log if the start key is pressed during the display error codes test. After clearing thedisplayed error from the fault log, the appliance shall display the next most recent error from the fault log.

After clearing all errors from the fault log, the control shall display the no error "E00"code on the 7-segment display.
The control shall log the last 8 error codes in the non-volatile memory stored in a circular list.

The control shall avoid logging multiple instances of the same error code. now unplug the appliance for about 30 seconds and replug and everything should be fine.

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Hello there

1. Turn the oven off and wait three minutes before turning it on again if "F -24" or "F-25" is displayed. These error codes mean the keys on the control panel were pushed or touched for longer than 60 seconds. Leaning against the oven or hanging objects in front of the controls can cause these error codes to appear.
   
2. 3 Press the "Oven Off" key to clear the display and reset the oven if an "F" followed by two numbers is shown on the display. Wait three minutes, and turn the oven on. This type of error code indicates a problem with the signal received by the electronic control board.
   
3. 4 Write the error code down if an error code displays more than once. Thermador recommends calling a service technician if an error code reappears.
   

Hi,

This solution will be of great help to you,even in the case of future or other dashboard problems;
Instrument cluster consists of electronic analog gauges, various warning lights, and optional tachometer. Vehicles equipped with tachometer have an electronic vacuum fluorescent transmission range indicator (PRND3L),odometer and trip odometer display. Vehicles without tachometer are equipped with a cable-operated transmission range indicator.
Instrument cluster is equipped with the following warning lights:
Battery voltage.
Cruise (speed control).
Door ajar.
Fasten seat belt.
Lift gate ajar.
Low fuel level.
Low windshield and washer level.
Traction Control.
The Body Control Module (BCM), which receives input from various sensors, sends display information to instrument cluster and operates gauges. Instrument cluster incorporates a self-test diagnostic feature to identify electronic problems. BCM, Powertrain Control Module (PCM), and Transmission Control Module (TCM) are continuously monitored by the diagnostic system.

SELF-DIAGNOSTICS
With ignition off, press and hold TRIP and RESET buttons while turning ignition switch to ON position. Continue to hold TRIP and RESET buttons until odometer window displays CODE (approximately 5 seconds). If problem exists, system will display diagnostic trouble codes. See DIAGNOSTIC CODE CHART table. If no problem exists, Code 999 (end test) will be displayed.
DIAGNOSTIC CODE CHART
CodeDescription
110.......Cluster Memory Fault
111.......Cluster Calibration Fault
905.......No CCD Bus Message From TCM
921.......Odometer Fault From BCM
940.......No CCD Bus Message From PCM

After diagnostic code display ends, instrument cluster will go into each of the following tests in order:
Dim test.
Calibration test.
Odometer segment test.
Electronic Transmission Range indicator segment test.
Dim Test
CHEC-0 will be displayed in odometer window. Instrument cluster will dim Vacuum Florescent (VF) display. If VF displays do not dim, a problem in instrument cluster exists. See BODY CONTROL COMPUTER TESTS in BODY CONTROL COMPUTER article.
Calibration Test
CHEC-1 will be displayed in odometer window. Each of instrument cluster gauges will move sequentially through each calibration point. See GAUGE CALIBRATIONS table. If gauge needle is not calibrated properly, a problem in instrument cluster exists.

Odometer Segment Test
CHEC-2 will be displayed in odometer window. Each segment of odometer will light sequentially. If any segment does not light, replace instrument cluster.
Electronic Transmission Range Indicator Segment Test
CHEC-3 will be displayed in odometer window. Each segment of electronic transmission range indicator will light sequentially. If any segment does not light, replace instrument cluster.