I need a Simpson EZI SET dishwasher inlet hose. I have been sent one but it is too short

see the solution; God bless you
How to determine a clog in your hose
Take your central vacuum hose and connect it directly to the dirt canister. After turning on the vacuum if the hose has normal suction here then the clog exists in your tubing.
Click here for help with tubing clogs. But, if you experience reduced suction at the canister then your hose is clogged. See Solutions below.
Plug hose in reverse into the inlet located on your unit and turn on the system. This should aspirate the clog out.
Or, remove the hose from the inlet and push a garden hose through hose to push out the clog. Most importantly, the garden hose must be turned off and there should be absolutely no water entering your vacuum hose.
Or, remove the hose from inlet and drop in a heavy object such as a screwdriver to push out clog.

If there is a switch on your hose, it may be broken.
Your system powers on from the inlets via two low voltage wires that run from the inlets to the switch/relay at the power unit. Each inlet has 2 spring loaded pins attached to the low voltage wires. In the photo below you should see these pins at the bottom of the opening, just above the door hinge. The receptacle at the top of the inlet in this photo supplies 110 volts to power your power nozzle. Not all inlets have this option, but if yours does, exercise extreme caution. Your hose must have a completely metal end or if it is a plastic end, it must have a metal band in order to short the 2 low voltage wires together to trigger the switch.
You can manually short the two low voltage pins together by using a metal pipe or needle nose pliers, just touch both pins at the same time. CAUTION: stay away from the 110 volt receptacle if present.
If your system powers on with this manual method then it would seem that the problem is in your hose.
If your system does not power on; your low voltage wires may be disconnected from the power unit or disconnected somewhere else . It's also possible that you have a bad circuit/controller board in the power unit.

You are suffering a connection problem of the hose end fitting to the wall outlet. Either the hose is not aligned with the two pins in the wall outlet, or the pins in the outlet are dirty and not making good connection to the hose end fittting.

If the switches on the hose will not turn off the vac you have a short in the wiring of the vac pipe system or a defective relay on the circuit board. Plug the vac in again without the hose and disconnect the thin low voltage wiring were it plugs into or screws onto the vac.
If the vac continues to run once disconnected from the low voltage circuit you have a defective relay in the vac itself. Some are circuit board mounted , others freestanding. To avoid a service call you can take the tank off the wall and take it to a pro shop or remove the top hosing if you are confident and check out the relay for a replacement part.
If the vac stops your issue is in the house. Has any painting been done or any inlets removed lately.. check that area first for a short at the inlet. Go back to any and all inlets and remove them one at a time checking the mounting screws and backing plates for loose wiring which is touching either the metal inner wall plate in the wall or a common screw . Test the vac as you go.
If this does not help, you will need to examine the wiring in the house , running along the pipe. Again if anything has been disturbed recently, near the vac, or near any piping that would be your first suspect area.
Post back to advise.

The hose connects to a set of low voltage contacts inside the top of each inlet. The vac wiring is connected by a low voltage circuit to each inlet as well. your hose when plugged in completes the circuit when you turn the hose switch on. For simplicity ,I also use a coin to connect the terminals mentioned below instead of dragging the hose with you.
Reinsert the hose with the tongue or cord at 12 o clock or 6 o'clock position. If the vac does not start, rotate the hose cuff to 3 oclock.This over rides the hose handle switch to test the vac circuit.
if the vac still does not start you have a loss of LV signal in your wiring. You will need to back track to make sure you have continuity from the vac to each inlet.
if you have colored alarm or telephone type wire, it is very easy to break a wire strand while fastening so go back one connection at a time and inspect.
If you have no power to any inlets,your problem will be in the main run of wire from the vac, likely to the first connection. If you have power at only some inlets, your issue will be at one of your wire junctions, either at a pipe intersection or where two wires meet at an inlet, depending on how the system was wired.
Post back to say how you are making out

You need to approach this step by step. If you have insufficient suction at all locations you need to check as follows:
1. Hose, drop a coin through from the handle to the wall end, with the hose detached from the wall. If the coin goes through from one end to the other the hose should be clear. If the coin stops it will rattle inside where the obstruction is if you gently shake the hose you will feel it through the wall.Obstructions in hose or pie need to bee **** wards out of the hose or pipe.
2. Vac. Go to the vac itself and see if the onboard inlet has suction. If it does your problem is beyond the vac. If not your problem may be a leak, either a broken inlet, with a cracked or sagging door or jammed hinge, a clogged intake in the vac, or damage to the pipe within the house or a twisted gasket where the pail of the vac secures to the body, or an issue with the motor itself..
3. Take the hose, inlet to inlet and check all locations in the house. I mark a tissue with a number for each inlet and plug in the hose, one inlet at a time. If the tissue makes it all the way to the bucket from each location, that means the branch line for that location is clear. I work from the closest inlet away to the furthest checking for tissues one inlet a t a time. This will help pinpoint location of any blockage in the main line.
4. If you have had any renovations or painting done it is not uncommon to disturb the seal behind and inlet or pierce your piping with a nail or screw. Check for all these and post back to say waht you have found.

Thanks for getting back to me,i solved the problem by asking a vac tech and he told me what to do ,it was easy.cheers gazza.

Hello peter639,
Since you failed to include brand and/or model number.. I suggest you simply add -on another cord to your existing flex hose. If your existing hose has molded connectors on them that you cannot easily find to match, then you may be better off just buying another hose from the manufacturer.. Your call..

Did you check the hose and the dirt inlet by the brush roll for a partial blockage? If no blockage, then it may be coming from the main motor, replacing it is the only way to fix it if it is coming from the motor. Also, some people can hear these higher frequencies, and most can't, so if this is what it is, there may be no fix for it other then a different vacuum.

Check the inlet down by the brush roll to make sure it isn't clogged. If not and the hose isn't clogged, then probably the thermo protector (part #28382093) maybe bad. It is mounted near the motor. Could be motor Part #43576188. But I would suspect a clog in the inlet or hose, or the thermo protector has gone bad.