About the CMS Inverter Range

CMS inverters were sold by a company called Carbon Management Solutions Pty Ltd which went into voluntary administration in 2013. The most popular CMS inverters were the CMS1500 and CMS2000 models, however a few larger systems including the CMS5000 and CMS10000 were also installed in Australia.

Are you experiencing problems with your CMS inverter?

CMS are unlikely to honour your warranty now that they’ve gone into receivership. If you can reach your original installer, they may be able to assist in having your unit repaired. This process usually involves:

  • Having a licenced electrician disconnect your inverter.
  • Returning the inverter (at your own expense) to a warehouse (which may be located interstate).
  • Paying for the unit to be repaired. It is difficult to determine how much this may cost as it depends on the extent of repairs required.
  • Paying the freight charges to have the unit returned to your home.
  • Having a licenced electrician reconnect the repaired inverter.

When you consider all of these expenses, plus the cost of your solar ‘downtime’, it is only marginally less than the price of a brand new unit (which would come with a new 5-year warranty).

Solargain’s solution

We pride ourselves in delivering exceptional service on all repairs, maintenance and monitoring, regardless of where you originally purchased your inverter. So even if you’re not an existing Solargain customer, we will happily take a look at your faulty CMS inverter.

The first step is to contact Solargain and book an inverter health check. In this visit we will:

  • Check the entire system to identify exactly what is causing the fault.
  • Attempt to repair the fault if possible. (See our list of known faults below.)
  • Bring along a replacement inverter (just in case yours is beyond repair), to get you up and running that same day, saving you time and money. (1.5kW replacement inverters begin from $700 and come with a new warranty.)

Troubleshooting your CMS solar inverter

The power light on your CMS inverter should be on. The fault light should be off. If the fault light is on, the screen will display a fault code. This will help identify whether your unit is repairable or not.

If the power light is on and the fault light is off, but you are unsure whether the inverter is working, you should monitor the inverter’s yield. (Refer to page 21 of your user manual for the screen sequence.)

Monitoring your CMS inverter’s yield

  • Using the function button, scroll to “Energy= {1234}kW”.
  • Record this figure, and then record it again the next day, at the same time. The figure should be increasing. If it’s not there could be something wrong with your panels or the inverter. We would encourage you to contact us immediately to book a health check.
  • If the number is increasing but you are concerned that the figure is too low then feel free to contact our office and we can compare it to a similar sized system in your state which we have previously set up on a data monitoring network. If you would like to be added to our data monitoring network, smart meters can be installed from $750. Some models can even help make you battery ready.

Known faults with CMS inverters

A Solargain inverter health check will help identify the following types of faults and whether the unit is repairable.

  • Isolation faults occur when water gets into the wiring somewhere in the installation. If water isn’t found to be causing the issue, then the inverter will need replacing.
  • Grid faults occur then the supply voltage to your inverter is outside the inverter’s preferred operating parameters. If the grid appears okay, then the inverter will need replacing.
  • No Utility faults occur when the solar supply main switch in the meter box has tripped off. If the problem persists while the isolators are turned on, then the inverter would need to be replaced.
  • All other CMS inverter faults would result in a very high likelihood that your unit will need replacing.

For further information about the CMS range or to book your inverter health check, contact our service department