What does red light mean on Grundfos pump?

What does red light mean on Grundfos pump?

6. The red “Alarm” indicator light is permanently on. a) Dry running. The pump needs water.

What are the lights on a Grundfos pump?

The Grundfos pump has 3 control modes (proportional pressure, constant pressure and constant curve). Each control mode has 4 settings to choose from. The user interface has 1 push button, one red/green LED and 4 yellow LEDs. When you switch on the pump, it runs with the factory pre-setting or the last setting.

How many gallons per minute does a Grundfos pump?

Description. The Grundfos 3 SQF-2 submersible pump model offers 3 gallons per minute maximum output, Helical Rotor technology, with a maximum head pressure of 395 feet, 49 inch Length, 1.0 inch NPT.

How do I know if my Grundfos pump is working?

These steps are for Lowara and Grundfos pumps, but will generally apply to all central heating pumps.

1. Step 1: Find the Pump.
2. Step 2: Visibly inspect the pump for damage.
3. Step 3: Turn off the power supply.
4. Step 4: Loosen the silver plate.
5. Step 5: Remove the silver plate.
6. Step 6: Check if the pump shaft has seized.

How do you troubleshoot a Grundfos pump?

Grundfos Troubleshooting Tips for “CR” Pumps

1. Wrong rotation – Check wiring for proper connections, correct wiring.
2. Strainers, check valves, or foot valves are clogged – Remove strainer, screen or valve and inspect.
3. Pump impeller or guide vane is clogged – Disassemble and inspect pump passageways.

How do you tell if heating pump is working?

If it’s working properly there will be a slight vibration and it will be warm to the touch. If your pump isn’t working, turn off its power supply and get a cloth and a screwdriver. In the centre of the pump, you’ll see a silver plate with a slot in it.

What number should a central heating pump be on?

Theoretically, the optimal speed settings in a central heating pump should ensure that there is 11 to 12-degree variance in the temperature of the water that is leaving the boiler and the water that is being returned from the radiators.

Why is my Grundfos water pump not working?

Check the water supply suction pipe for damage or obstructions, if the pump does not start. Run a supply of cold water through the pump, if the unit does not start due to overheating. Inspect the electrical box for blown fuses and tripped breakers.