Rinnai Tankless Water Heater: First power-up setup: gas type and indoor/outdoor (RX/CX)
First power-up setup: gas type and indoor/outdoor (RX/CX) on a Rinnai tankless water heater: At first power-up the controller asks for gas type then installation location; gas type can also be changed later with parameter 10, only within 20 minutes after power is supplied.
Applies to: Rinnai SENSEI RX/CX tankless (RX, RXP, CX, CXP)
How to fix first power-up setup: gas type and indoor/outdoor (rx/cx): step by step
- At first power-up SEt shows and the Priority LED blinks. Press Priority: nG appears.
- Press On/Off to confirm natural gas. For propane, press Up or Down to change to LPG, then On/Off.
- To redo, press Up to go back to the first step; to accept, press Priority.
- The gas type can also be changed later with parameter 10, but only within 20 minutes after power is supplied.
- Press On/Off to confirm indoor.
- For an outdoor installation with the Versa-Vent outdoor vent cap, press Up or Down to change to Out first.
- From the In screen press Up or Down: Out appears.
- Press On/Off to confirm outdoor.
If the unit shows an error code, look it up: Rinnai Tankless Water Heater codes
Models
CX160iCX199iCXP160iCXP199iRX130iRX160iRX180iRX199iRXP160iRXP199i
Source: Rinnai SENSEI RX Residential Installation and Operation Manual (100000839), 4.12 Initial Settings p.46-47. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.