Gas hot hose down not hot satisfactory? i have a gas junkers hot water system -the specifications are...

i have a gas junkers hot water system -the specifications are HGC 82 mj /t p press 1.00Pa / injector 2.30mm and is on instinctive gas. ive been away for several months and things seemed to enjoy changed in my absence. I've turned the temp lever as far as it will travel to the right to "select" "more heat less water" - ably i think thats what its doing- the diagram on the actual lever is upside down according to the instructions on the heater! anyway if i move it adjectives the way to the left and turn the hot river on, the pilot light remains on but doesn't burst into flames, so i guess all the path to the right would indicate the reverse, that is, as soon as the tap is turned on, the pilot insubstantial bursts into flames. trouble is the water is not hot enough. it is hot within the laundry which is in the same spot as the gas hw system, but upstairs contained by the shower/kitchen etc. the water is warm. probably of late hot enough to have a shower (sort of) but not hot adequate to do dishes. do i need a new hws?
Answers:    For a gas kiln to burn evenly and efficiently, it must have an ample supply of combustion nouns. If a gas water heater isn¡¯t heat water, check the pilot light; Remove the outer and inner access panel to make sure the pilot is lighted. If you can¡¯t get the pilot pale lid, the thermocouple may be worn out.
you may need to flush your hw tank. There should be a drain port practical the bottom of the tank. You can either attach a hose to this or bucket by bucket. You may enjoy alot of sediment in your tank. You should also own a temp guage on your tank. Like for instance a dial that says low, hot, highly hot etc... If this doesn't work a call into the plumbers is the next entry. For you'll have to have a licensed plumber to install a hot hose down tank. It sounds like it may be the cold marine inlet tube is broken. This pipe starts at the top of your tank and directs the cold water to the bottom of the reservoir so the hot/cold temps don't readily mix. If this tube is broke...the hot/cold meets in the middle or top of the container and will mix and result in "not hot enough". Look at the date of manufacture on the label, it's there by law. If the element is 10 years or older...you may consider a new one.