There can be several reasons why your Jacuzzi® SmartTub™ App shows an alert message "The flow switch is malfunctioning open. Heater is disabled."
Important note: All electrical work must be carried out by a licensed electrician. Any electrical information included here, whether it is troubleshooting or other instructions, are provided for use by a licensed electrician only. Local electrical codes supersede any information found here.
Let's look at some of the potential causes of this error message.
- Low water level
- Restriction to flow causing a fluttering flow issue due to low flow (pinched hose, loaded filter that needs to be cleaned, other restriction)
- Defective flow switch
- Software Reset on board is required
- PCB faulty