To Next PageTo Next PageWhy doesn't the digital controller power up on my Jet MAXI D125?
If the digital controller on your Jet Heating System isn't powering up when you switch on the unit, check these: * The fuse has blown. Replace the fuse. * The mains power supply is at an incorrect voltage or frequency. Check mains power supply. * The 12V transformer has failed. Replace Transformer. * The digital controller has failed. Replace digital controller.
What should I do if the pump runs but doesn't make up pressure in my Jet MAXI D125?
If the pump runs but doesn't build pressure in your Jet Heating System, it's likely that the pump is air-locked and not pumping water. Bleed the pump to resolve this.
General| Brand | Jet |
|---|---|
| Model | MAXI D125 |
| Category | Heating System |
| Language | English |
Details electrical connection requirements, safety, and isolation for the unit.
Lists essential conditions to verify before starting the commissioning process.
Explains how to access and modify controller settings using access codes.
Details all menu items, their functions, and default values for configuration.
Procedure to test the unit's operation by simulating a minor pressure leak.
Lists and explains all fault codes displayed by the digital controller.
Addresses issues when the LOW PRESSURE fault is displayed and pumps do not run.
Addresses issues when the HIGH PRESSURE fault is displayed.
Addresses issues when P1 or P2 FLOOD LIMIT faults are displayed.
Addresses issues when P1 or P2 FAIL faults are displayed.
Addresses issues related to low or high water level faults.
Addresses issues with pressure readings and sensor errors.
Addresses pumps not making pressure or becoming air-locked.
