There are instances when the controller may trigger when no one is actively drawing hot water and this feature was added to address this issue. This feature is available via “Settings→Advanced Settings”. It is disabled by default but if you are experiencing these issues and have increased your sensitivity setting in an attempt to prevent this, you can try enabling this feature and setting the sensitivity back to the default of 20 and see if this resolves the issue.
Before changing the default setting of 19 ms please read the Technical Details.
The controller is normally turned off by sensing the temperature difference, but if there is a failure with one of the sensors, like a temperature sensor has come loose from the piping, the controller would continue to run indefinitely. The “Maximum Pump Run Time” will turn the controller off at a default of 15 minutes. This can be adjusted via “Settings→Max Pump Run Time” from 1 to 30 minutes.
If the “Max Pump Run Time” has been exceeded the controller will blink the red led every 5 seconds instead of the green led every 10 seconds and the smartphone app will display “Run Time Exceeded” on the “Live Data” screen. This will be reset when the controller is triggered for another cycle.
The current pump run time has been added as a value to the “Live Data” screen and is displayed for 10 seconds after the pump turns off.
If the controller has an error communicating with a temperature sensor the controller will flash the red LED, turn the pump off, AND disable the controller until the issue is resolved and the controller reset. Previously it would flash the red LED and turn the pump off, but there have been instances where the sensor error was intermittent causing the controller to toggle on and off rapidly.
This feature is delayed for one hour after plugging the controller in so that during installation you can adjust the temperature sensors without the controller getting disabled. During this time the controller will blink the red LED and turn the pump off but will not disable the controller.
Temperature sensor errors can normally be resolved by inspecting the Y connector where the temperature sensors connect and ensuring the pins are not pushed to one side or the other. If they are you can straighten them with a small screwdriver or pen knife. If they are not visibly bent it can help to wiggle the RJ-14 connector as you insert them to ensure the pins drop into the slot in the connector and make solid contact.
If the controller becomes disabled it can be re-enabled by connecting with the smartphone app and pressing the “Trigger Pump” button. If there is a temp sensor error the smartphone app will display “Temp Sensor Error” on the “Live Data” screen.
The firmware was updated to correctly re-enable timers that had been automatically disabled by the “Smart Timer”TM feature.