AquaMAX G390SS Questions & Answers

I discovered it was 1400Kpa

Hi Gerard, It could be one of a few things. Most common is a faulty gas control (thermostat) or a faulty thermocouple. Pretty simple fix.

I replaced the thermocouple it's okay now
Very easy,plumber ask $385, cost me only $20

Hi Andrew,

There can be a range of things causing this, but most likely the gas control is faulty and needs to be replaced.

If you are located in Melbourne I would be happy to help you.

Nathan

Hi I have a aquamax hot water system. And have had it for 20 yrs. and now I’m about to go
Out and buy the g390ss but seen all these reviews about how bad the system is. So what do u think I should do?

I would recommend having it replaced, this will solve all your issues.

The thermocouple won't be the issue in the case, it's likely the thermostat(gas valve is faulty).

Having a new system fitted would be my recommendation.

Nathan thanks for your reply. Your diagnosis of a faulty gas valve is absolutely correct. To replace it I was quoted approx $400 plus. A replacement unit of a NEW Aquamax 390 (same for same) cost $1477 from Hartley Plumbing on 0408135385. Other quotes came in at $2500 to $3000. Thanks Again...A tip however to everyone is never turn off the gas supply to any OLD Gas Appliance like Water Heating Units unless it is absolutely essential as old appliance never restart again without costing you money.....

There is a spring loaded tap on the overflow valve, operated by a curved silver coloured lever, that one pulls to open the valve and allow water out. I think it can be set to stay open. If you pull it and it was in the close position the flow should increase. If you push it down, the tap should close and the flow should stop. If it only slows then it is probably a faulty valve and you will need a replacement installed. That is probably a job for a plumber. If you open and close it a few time it may seal if a piece of dirt was in the way and stopping it from closing completely. The only other thing I can think of is that you mains pressure is very high and in that case you would need a pressure reducing valve to reduce the pressure to the heater. If it is too high, the valve will oer flow to protect the tank from pressure damage.

I have an AquaMax 390SS but I can get hot water only from one outlet at a time. If the shower is in use, we cannot turn on any other tap as the shower goes cold. An employee of the manufacturer advised me that the cold water supply pipeline to the unit should be 3/4" and not 1/2", but the plumber who installed the unit disagrees with the manufacturer's employee suggestion. The manufacturer's employee would not give me that advice in writing, so you make of it what you want.

Hi Andrew. I can't help you with this question as I only had trouble with the pilot light going out.

The drain outlet is actually a pressure relief valve to release any excessive pressure in the system, you will find that this is faulty and is allowing the unit to release water at too low a pressure. It will need to be replaced as these are not repairable.

Hi Try turning the dial down to may be 2.5 or 3. Your pressure may be due to the dial being high for your requirements.

I think you need to contact AquaMAX customer service for this question. I am only a customer who purchased one of their units, and certainly not associated with AquaMAX in any way.

Call and ask the aqua max manager Noel - direct line 03 9556 5539

are you a licensed plumber?

Yes - I am a fully licensed plumber.

Sorry Ben, unable to help....what does Aquamax say...try their service department..
My experience with Aquamax was very poor you may have better luck.....

Hi Pet, I'm not a plumber and I don't have any experience with the Aquamax Gas HWS....this question is best answered by a plumber....I wrote my review on the Solar / Electric model. Sorry I couldn't help.