Hello Christopher,
We're sorry to hear about the connectivity issues you've experienced with both of your RWM200 Wireless Modules and the frustration you've encountered while trying to get assistance. We understand how disappointing it is to upgrade your equipment and not receive the reliable connectivity you expected.
We'd like the opportunity to review your situation further. Please contact Rinnai Customer Care through our online chat or email and provide your existing case number, if available, so our team can review your support history and determine the appropriate next steps.