Hi,I have a Jazzy that is running very slow all of a sudden. When the seat is at it fully down position the chair will not drive at all, when the seat has been raised a couple of inches it starts to move forward but only very very slowly. Any ideas why? Andrew

Andrew,

It sounds like you are describing the seat elevator on the 1120/2000. Depending on the type of electronics ( Penny and Giles or Dynamic) and the type of toggle (through the joystick or a separate toggle switch), there a number of explanations.
The electronics are designed to inhibit or slow down the speed of the chair 1/4 or 1/2 based on the position of the elevator with regard to the magnetic reed switch sensor on the elevate post. If the elevator is slightly raised the magnetic switch opens or closes. This inhibit is designed to slow down the chair for safety when it is elevated.
You may have a bad inhibit harness, bad sensor, poorly adjusted sensor, etc. The sensor and wiring is easy to check and adjust. The way I diagnose this problem is to bypass the inhibit harness to test at full speed and work my way back to the faulty component.
You can do the magnetic reed switch adjustment yourself with a small screwdriver. Move the magnet and sensor on the elevate post until it works. This is a trial and error type of adjustment. The sensor and magnet should move close enough to activate the switch sensor without hitting.
The fact that the chair does not work at all in the down position probably means the harness is getting pinched or is bad, A continuity check is the best way to verify this.
By the way ,the easiest way to do all this checking is by pulling the seating system and removing the cover of the base. A common household magnet is handy to have for testing.
Hope this helps.

There is a speed restriction switch, it is located on the seat riser main post it is a two part magnetic switch, it may have failed, you can hard wire a bypass by cutting off the switch and joining the two leads together, this will disable any speed ristriction so be sensible and only use the riser at slow speeds. or replace the magnetic switch. they are very cheap most electronics shops / sites will have some they may be a diferent type so you may need to find a way to fix them to the riser.