Quantum Energy AC4 Series Questions & Answers

get a plumber who knows the product to check. their helpdesk no. not helpful in my case

Faulty tempering valve/mixing valve on your plumping

i have the same issue now just replaced the pressure relief valve and now a buzzing noise and no hot water. Before l replaced the pressure valve had no issues ??? any help

Wayne B, any follow up on this? Did you find out why/what the buzzing noise was? My quantum has started doing the same thing although the buzzing noise is much more frequent - every 20 seconds or so. And of course it's night time now. Hopefully not annoying the neighbours. Cheers, Michelle

faulty compressor start capacitor

I have an AC6. As far as I know you shouldn't be able to adjust the temperature on storage HWS of any kind. Australian standards say it must be fixed at that temperature (60c, I think) to avoid Legionaires disease.

I have an AC6 model, which is a bit more efficient. It has a programmable timer, albeit in an inconvenient place underneath the condenser cover. There's a video on Youtube showing how to set the timing. I believe that the AC4 has the same or a similar timer with the battery backup. It's a bit fiddly to set but it works well. Running it in the day only means that (1) you use less power (the air is warmer) and (2) you can run it off your solar for free, if you have it.

https://www.youtube.com/watch?v=iTyPFSRiucY

The Quantum timers are not set from factory, its possible your power supply for the unit is on night rate

My compressor lasted just over 2yrs and needed replacing and warranty is onky a very minimal one of 2yrs for such an expensive product.

Feel free to call me if i can help you with your quantum 0430 506 860 sunny

i am assuming that the Quantum Heat pump is 18 years old. If so, 18 years is not too bad. These heat pumps do require regular servicing by a Quantum Technician. I would get it checked out, but if it is noisy it could be compressor problems and if so a replacement compressor would be more expensive than a new hot water system. I replaced our Quantum with a standard "on demand LPG gas water heater", cost installed was less than $1,000, including extra fittings. Works well for us in the bush. A lot cheaper and more efficient than the Quantum. Good luck with it.
Graeme

It may have air in it. You should have two relief valves on it. Open both of them in turn, and let a some water drain. It may help. Our Quantum rubbish lasted a little over six years, so if you have one thats over 18 years, thank your lucky stars and start thinking about a new system,, but definitely NOT a quantum, if you want after sales service.

Agree with Graeme, 18 years would be a very good life for the Quantum, my original system lasted 12 years. I have no idea what N10078 refers to. I would suggest you contact Quantum direct to get advice on the source of the noise and to discuss options/price to repair or replace. We do not have gas so need an electrical heating device and I just replaced my original installation with a new one as I was happy with the performance, eg low running cost. Our system does make a bit of noise, but as it is installed inside, have located it in a laundry cupboard so that mutes the noise sufficiently that we don't really notice it. I would suggest that all Quantum and probably all heat pump systems do make noise from the compressor.

I think a technician may be able to do it by removing the top cover and adjusting the readout.. please contact a technician. other than a quantum that is!. I don't fancy your chances of getting a reply from Quantum though. They are the most unhelpful people I have ever had dealings with..

On the left of the unit is an orange circular cover. There should also be a triangular key attached to the side of the unit. Under the orange cap is a brass triangular screw. Use the key to adjust this brass screw. You only need to turn this screw about one quarter of a turn. If you have heating problem it may be loss of refrigerant gas in which case it should be topped up by a licensed refrigeration technician..

Hi, The unit we had was a heat pump model number270-11ac3-134. It leaked within one year of it being installed. We were assured "if it persisted they would replace it".That never happened. They also assured us that we would get at least TEN to FIFTEEN years usage. We got less than six years. Quantum took seven weeks to to contact us after we complained. Some person from Quantum told me he was ringing to tell me they would not do anything about it. I haven't got the means or the patience to go after the ignorant no hopers.. All I can advise is to DOT NOT DEAL with this company in any shape or form. They are, by far, the worse Company I have ever had the misfortune to come across. It was the biggest waste of over four thousand dollars I have ever spent..

faulty Evaporator/de-ice sensor

The outside air temperature? Man, that's weird...I wish I could help, that sounds like a temp sensor issue but don't quote me on it, sorry.

perhaps it is the temp sensor? you could try shading the unit and make sure it is well ventilated.
You should try the q and a on the quantum web site.

The noise level was ok,

No noisier than a split system air conditioner. From inside we can't hear it. Outside can hear a low hum if it's a quiet night

planning to install on bedrooms external wall, I had heard noisy split air conditioners, so I am not convinced about the noise ?

Hello Sarah,

You are best to check with Quantum direct for the current price.
quantumenergy.com.au/

cheers

Paul

try as you may i am not sure they will answer
I do think that there is most definite savings for you while using a heat pump hot water unit whatever brand you choose to buy.
question for you is your compressor running all the time or does it run then switch off ????

Hi Julie,

Still no bill as yet, so no good info for you.
There should be a saving as I understand it. Instead of the element with a big current draw immersed in the water doing the heating, there is now a compressor and fan with a much reduced need for electricity doing the job.
Possibly your unit was wired into daytime rate rather than off-peak.

cheers
Paul

Thank you Paul and Leo for your replies. I have no idea about off peak settings or whether the compressor is running all the time or not (I'm a real girl)!! Should I ask the plumber who installed the unit those questions or should I try and find that info in the owner's manual?

How old is the heater, I had to replace my at 6 years old, could also be no power to unit, what area are you in, I could do a service call to check it

Thank you Joe but we have found somebody to look at it this afternoon.

Call a plumber to check it and replace if neccessary

purchase a new unit and install

I have posted my review about how bad the noise and service from this company is.
There are very few people that are qualified to repair it and I recently paid a QUANTUM service repair person to repair it at a cost of $460 and he carried out the five year service. The unit now continuously leaks hot water.
I am not throwing any more money away by calling a Quantum repair person.