Rinnai strongly recommends the installation of an optional drain-down system on units installed outside in cold climates. Once installed, the system allows water inside the unit to drain out if there's a power and/or gas outage or a component failure. See the owner's manual for optional drain-down system piping.. contact Rinnai for proper gas pressure setting procedures. 13. Verify manifold gas pressures and dip switches were properly set for your altitude. This information can be found under the front cover in the plastic holder. If missing contact Rinnai for proper gas pressure setting procedures. 14..
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However just like any appliance, even Rinnai's vaunted water heaters can occasionally experience issues. This guide provides a step-by-step approach to troubleshooting common problems, understanding diagnostic codes, and resolving issues in Rinnai's tankless water heaters. Common Issues with Rinnai Tankless Water Heaters 1. No Hot Water. Page 1 E- Series Boiler Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. Extreme care should be used at all times to avoid contact with energized components inside the product. You MUST be a qualified service person before proceeding with these test instructions.