"bonaire eveap coooler displays er5"

You can check the wiring but this looks like an incompatible controller. Here are some alternatives:

If you're looking to purchase an Evaporative Cooler Vulcan Touchpad Controller, there are several options available. Here are some places where you can buy one:

The Home Depot: You can purchase a DIAL Evaporative Cooler Digital Controller from The Home Depot for $64.48.
Gasstop: Gasstop offers a refurbished wired Bonaire Comfort Control remote that works with Bonaire and Vulcan gas central heating systems for $150.
Bonaire Heating & Cooling: Bonaire offers a range of Navigator Remote Controls for Cooler and Heater, including My Climate® Wi-Fi® for ducted evaporative cooler, ducted gas heater, or dual-cycle air conditioner.

Navigator Remote Control for Cooler and Heater (bonaire.com.au)

here is a link to manual. if you are renting call bld. maintenance


https://www.manualslib.com/manual/639673/Bonaire-Bonaire.html#manual

It really seems to me the filter needs to be changed and then the until cleaned inside. clean and vackuum everything and put in new filters. if it water vaper until clean and put new filters in. it just seems like it needs a good cleaning

e5 error is drain error. need to check all drain related items.
drain pump, drain hose, and of course garbage disposal knock out.

If you're the guy with all the ER5 questions you need trained help and a manual.

what is error 97

I just went into the Bonaire website and downloaded their FAQ on gas ducted heating from their support link. Their instructions are pretty easy to understand.

yes

The ER5 has got an electronic rev-counter, no cable.

Like the oval rear brake-drums this is another ER5 bugbear, the rec/rec fails, the battery boils and the rev-counter is usually a victim too.
Often on ER5 specific forums there will be someone who repairs the circuit board and sells the repaired units much cheaper than a new one. it's usually a tiny zener-diode that is killed.