Need a long term outloook
Our Sunmaster solar system wjth Rinnai 20 booster did not work when we bought the house. It was 12 years old. The pump was no longer working and the cost to replace the pump was not viable on an old tank. The cost to replace the total system of near $5k when we intended to sell the house within 5 yrs did not stack up. We opted for Rinnai B26 Continuous Flow unit and threw the solar out. Assessment unless you have a big family and hold the house for 10 years not worth the outlay for solar. It doesn't work your heater and thats the biggest cost with gas.
Rinnai Sunmaster tank installed as part of Hills evacuated tube solar hotwater system. Tank failed due to corrosion at cold water inlet and was replaced under warranty. Replacement tank has failed within warranty period due to corrosion at hot water inlet in the same manner as before. No advice on first warranty that our water quality was an issue. They are fitted i believe with sacrificial anodes. Warranty only covers one purchase not the quality of the product. Suspect poor quality metals being used at connection points.
Not worth wasting your money on, by something that's quality and compare warranty to purchase price.
Purchased in October 2012.
Hot Sensor Lead
The Hot Sensor Lead (20m) 31002715 has deteriorated after 5 years from the heat of the collector panels.
The 20m lead that is supplied by Rinnai is not heat rated. This is Speaker cable and not suitable for Hot Temp Probes. Silicone coated wire should be for the first meter then speaker cable (fig 8) will be fine.
There is no information in installation manual regarding the specs that the hot temp probe requires. I would like this so i can purchase a non generic brand.
Purchased in November 2014.
Reported pump 3 times in last year - it still whines all night!!
I’ve reported that the pump on our Sunmaster 26 has been running all night 3 times since we moved into our new house 18 months ago. Rinnai tell me there’s nothing wrong when there clearly is. The pump whines all night. And you can hear it from our bedroom upstairs. It’s infuriating! Our guest room is downstairs on the adjoining wall and guests complain about the noise too. I do not recommend this system at all!!!!!!
I also fail to understand why the pump runs in the middle of the night. The electricity bill probably negates the benefit of having the panel in the first place.
Rinnai please take this seriously for once and do something about it!!
Not Long Out of Warranty and Solar Panels Fail
Bought a new house in 2009 and the Rinnai Sunmaster was the system the builder had installed. Admittedly, I've have had trouble free hot water for many years, but isn't that what hot water systems are supposed to do. Anyway, about a month ago my suburb had a really severe frost and one of my solar panels failed. I came home to find water gushing out of the top of the panel and over the roof. Of course it happened on a Sunday! Couldn't get response on the Rinnai 'Hotline' so I had resort to calling a local plumber. He was sympathetic but couldn'...t come until the next day as he was booked out for the whole day. Seems there were many, many others in the same boat as me with frost affected panels. Local plumber managed to get to me on the Monday and didn't even want to look at the panels. He seemed to think it wasn't worth even getting up a ladder so he just 'capped off' the system. I am now just relying on the gas booster. 20 mins work $165. After a lot of thought I rang Rinnai. I really just wanted a second opinion from an expert. I mean, what is the point of having panels on the roof if they're not being used? I was told that I would have to wait nearly 2 weeks for someone to come out and it would cost $195. Well, o.k I guess. The system was looked at and it was found that a metal stopper/end cap had been forcible ejected from the top of a panel when the water expanded as it froze. Simple, I thought. But wait, you can't just put the stopper/cap back on, you have to buy a kit for that. Mmmm, how much for the kit and then fitting? $230. Plumber then explained that it might not be that simple. It has been his experience that I could go to the trouble and expense of getting the panel repaired and then the panel fail by cracking from next severe frost. Hang on, I thought the panels had some some kind of frost protection? He said that panels with frost protection only get installed in designated severe frost areas. These areas, I was told, are designated by the local Councils. Apparently I'm not in one of the designated areas, therefore no frost protection. In his opinion I would be better off not to bother trying to salvage the panels and just solely rely on the gas booster. Sometime in the future, when I can afford it, I will be paying someone to remove the panels and patch up the roof. Very annoying. To sum up, I'm upset that such an expensive system can fail just due to frost. I definitely wouldn't have another Sunmaster. Update: Aug 2018 It is now many, many months since I had faulty Rinnai Sunmaster tank and solar panels disconnected. I have had a plumber remove the bypassed water tank and the solar panels from the roof. I am just using the instantaneous gas hot water booster that has now been mounted on the wall. I have been reading my gas bills carefully over the past year and have honestly not noticed an increase in my gas consumption since not having the solar panels preheat the water. Seems that the solar system was not saving me any money at all. All I can assume is that the system wasn't working properly for a long time before the major fail? I guess the moral of the story is to check (not sure how?) that the system is working correctly and not assume that all is well.
Solar hot water does not save money bad water pressure after install
We have a new home . Builder installed Rinnai sunmaster SG215 with gas booster. The water pressure from garden tap is excellent . The pressure inside our house is very bad , when I have a shower and my wife turns the hot water tap in the kitchen or anywhere in the house the pressure is reduced . It takes 15minutes to fill the washing machine.
We have spoken to a person at rinnai and he said thats normal .He told us that the flow rate should be not be less than 9lts a min. Which is what we are getting. We have had plumbers out to see if they co...
Pump runs continuously
Pump runs continuously day and night, technician has been out and replaced the controller component, pump still running day and night. Technician is back today. Haven't heard outcome of today's visit yet. It seems as though this is a common problem with this unit, when I spoke with rinnai though they denied this was a common issue.
Similar Problems to others - unreliable
First, my Rinnai Sunmaster system kept turning on and off at night, cooling the water that had heated during the day - this MUST be a design fault. To defeat this, I put a timer on the pump connection. Also, after about 2 1/2 years the pump started making a rattling noise and not pumping properly. Rinnai offered to come out and "look at the problem" for several hundred dollars, even though this is, obviously, a common problem with the pump - to the extent that there's an "improved model". There should have been some sort of recall for the two c...ommon issues affecting these systems. Actually, in hindsight, in Melbourne, it's better to invest in a heat pump hot water system to run off your solar and get zero cost hot water all year. I'm sure there are solar hot water systems that work better than this one, though.
Unreliable solar hot water system
Prior to Sunmaster solar system-gas boosted installed in October 2009, I specifically requested a frost-friendly system and was assured it was frost rated. Stopped working July, 2010, September 2010, July, 2011, July 2012. To date I am still waiting 6 weeks later for the system to be repaired with frost-rated panels. Each time the panels or valves have cracked due to exteme cold weather, water pours off my roof and into the gutter - wasteful and expensive. This system is under warranty. The gas boosted hot water is efficient but never feels...hot enough, apparently set to 60 degrees. Not good enough for a solar system which cost almost $6000! When operating in summer it is energy efficient System stops operating beginning of every winter since installation (3 years). Very frustrating.
Questions & Answers
Hi, I have noticed that the pump isn't running anymore, is it dependant on outside temp or should it continuously be circulating water between tank and solar collector. Outside temp is about 12 deg C.
The pump will run more in times of more solar gain but even in winter months there is a setting called low temperature mode which will activate the pump to protect the system against frost damage,
We would recommend speaking with the technical help desk on 1300 555 545 option 3 to check the pump operation and book a service call if required.
Hi Rinnai support,
I have just checked with my neighbour who has same unit and his circulating pump isn't running either, we'll both wait to see if when we get a bit of sunshine to heat the water in the solar panels if the circ pump switches on , if not we will both call the help desk for a service call.
My question to Rinnai is, given the laundry list of similar complaints, has anything been changed in the units over the years to give me any confidence in outlaying $5k that the unit will be fit for purpose?
there have been many changes and upgrades to our solar range over the years. Our technical team can discuss any specific areas that might be of interest to you as well as giving you some advice to ensure the right system is chosen for your needs,
They can be reached on 1300 555 545 option 3.
I have a 250ltr Sunmaster. House & HWS only 2 ½ years old. Have just realised that my household 240v power usage soared by factor of 3 to 4 at end last year. AGL have said meter OK. I am in process of seeking cause & now focused on HWS as little else in household uses power. Established that HWS solar pump is running 24/7 - no idea how many months as very quiet & only heard with ear to pump cabinet. 240v booster continuously "on" from beginning so not cause for change in power use unless change in something like pump not turning off can increase use of 240v heating. Needing guidance. No knowledgeable local plumbers available at present.
Hi John S,
We have a technical help desk who may be able to provide assistance but will need more information to help. They can be reached on 1300 555 545 option 3.
Already been there. They suggested plumber [& not much else] but no good ones available at present. What is actual consequence if pump running 24/7. Does it make 240v element work more by constantly feeding water past whatever sensor activates? Does it reduce solar heating performance - eg water not as hot [when turned 240v off for 3 days. As part of current seeking answers, the water dropped to "warm" despite sunny [winter] days. Rgds John
Hi John S,
Potentially having the pump running constantly could affect the water temperature in the tank, cooling down water that has already been heated however without further information it is difficult to be specific with the issue.
if you are unable to find a local plumber with the experience to check the system, you can book a Rinnai technician through our online booking and they can check over the system to see if there are issues that need to be resolved.
The link to book online can be found here:
Get an answer from our members and Rinnai representatives
|Category||Solar Water Heaters||Solar Water Heaters||Solar Water Heaters|
|Release date||Apr 2010||Apr 2010||Apr 2010|
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