Caldera Spa 4 Dashes on Display- Troubleshooting Guide 

The display of a normally operating spa shows water temperature, water flow status, and other active features such as jet speed or lighting settings, etc. If the display of your Caldera spa is showing 4 dashes on display, it indicates an issue.

The four dashes on display can be due to several reasons. If you’re wondering what the problem is and how to fix it, keep on reading. In this guide, we’ll cover all the possible causes of the problem with tried-and-tested solutions and help you get back to enjoying your spa in no time. 

Without further delay, let’s get right into it!

Caldera Spa Showing 4 Dashes on Display: Possible Reasons and Causes

There are several causes of the 4 dashes on the display of a Caldera spa. The most common ones are listed here:

Loose or Damaged Connections

With time, the connections between the control panel and circuit board can become loose due to vibrations. They can even be damaged due to normal wear and tear. 

Now the control panel and circuit board communicate all the information about the spa such as its temperature, water flow, etc. A loose or damaged connection, therefore, can interrupt the communication between the circuit board and control panel, and consequently cause the display to show four dashes. 

Pressure Switch Failure

A fault in the pressure switch can also cause the Caldera spa to show four dashes on its display. The pressure switch helps to regulate the flow of water and keep the heating elements running safely. 

The failure of the pressure switch can disrupt the function of the heaters in the spa. As a result, the display will show 4 dashes on the screen, indicating a problem.

Faulty Control Panel

A damaged or malfunctioning control panel will fail to communicate the information about the spa to the circuit board, and it can result in four dashes on the display panel.

The control panel of a spa can be damaged due to various reasons, including water damage, wear and tear, or exposure to extreme temperatures, etc. 

Power Supply Issues

Issues in the power supply can cause the display of a Caldera spa to show 4 dashes. A steady and consistent power supply is required for the proper operation of a spa.

An inconsistent power supply, on the contrary, can damage the important electrical components of a spa, such as the circuit board or control panel. Moreover, it can also disrupt the normal operation of the spa and hence, cause the display to show four dashes. 

Low Water Level

Low water level also causes the display to show 4 dashes on a Caldera spa. The amount of water flow helps the control system of a spa to identify if it is functioning correctly or not. If the water level is too low, the control system will fail to detect the water flow, consider the spa function faulty, and show 4 dashes on the display as a result.

Caldera Spa 4 Dashes on Display: 5 Easy Fixes

Now that you’re aware of the possible causes of a Caldera spa showing four dashes on display, let’s move on to the solutions. 

Check the Power Supply

An unstable power supply is the most common culprit behind most spa problems. Make sure your spa is receiving a stable and consistent power supply at all times. 

Check for any loose connections, find out the ideal power requirements of your spa and make sure to provide that. Install a surge protector to avoid any damage to the electrical components of the spa due to power surges. 

Reset the Spa

At times, the display may show 4 dashes due to a temporary technical error. Resetting the spa can help overcome the issue.

  • Turn off the spa and wait for a few minutes.
  • Now turn it back on and look for a reset button on the control panel of your spa.
  • Press the reset button for 10 to 15 seconds and then release it.
  • Finally, check the display. It should be functioning normally now.

Check and Replace the Pressure Switch

The failure of a pressure switch can make the display on a Caldera spa show four dashes. If the pressure switch fails, the best solution is to replace it. 

But before you replace it, find out if it’s actually causing the problem. Here’s how you can do that:

  • Disconnect the spa from the power source.
  • Find the pressure switch (usually near the heater). Remove any wires connected to the pressure switch. 
  • Use a multimeter to test the pressure switch. A properly functioning switch will show a reading of 0 ohms on the multimeter.
  • If the multimeter shows an incorrect reading, there’s a problem with the pressure switch and you should replace it.

Check the Circuit Board

Inspect the circuit board of your Caldera spa to look for any signs of damage, wear and tear, or burns. If you find any issues with the circuit board, you’ll most likely have to replace it. 

Clean Clogged Filters

Clogged filters can create water flow issues and disrupt the heater’s function. This in turn, causes the display to show four dashes. If the filters of your Caldera spa are clogged or dirty, clean them to fix water flow issues, and you should have your display back to normal.

Wrapping Up

We have discussed the most common causes and solutions for the Caldera spa showing four dashes on display. But if the above steps don’t work for you, get help from a professional for a complete diagnosis of your spa.

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