One of the most popular switces used! Tecmark 3903 universal pressure switch for use with systems that require a similar 1 amp rating and an adjusable psi range of 1-5 psi. This switch can be used on Balboa, Gecko, ACC, Len Gordon, Spa Builders, CTI, Correctech, United, Maddox and many more. The male thread is a 1/8" mpt and the top of the switch has two electrical terminalsd with adjusting screw.
When this switch fails you can get three blinking dots, FLO, FLC or FL. If your pump is running well, your filters are clean and you still have a flow message then the pressure switch is an item to check. You would either have one of these scenarios - either your switch isn't closing when the pump is running, its not opening when the pump is off, or could be leaking which causes a loss of pressure.
| Manufacturer | Tridelta/Tecmark |
| Switch Type | Pressure |
| Pressure Switch Rating | 1 to 5 psi |
| PSI Rating | 1 to 5 psi |
| Pressure Switch Amperage | 1A |
| Thread/Pan Material | Plastic |
| Plumbing Connection Size | 1/8" |
| Plumbing Connection Type | Male Pipe Thread (mpt), Male National Pipe Thread (mnpt) |
| Pole/Throw | Single Pole Normally Open (spno) |
| Pan Material | Plastic |
