Rinnai Water Heater REU-V2520FFUD - Manual (Page 12)

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Rinnai America FF Models
R E M O T E C O N T R O L L E R O P E R A T I O N
DIAGNOSTIC USE OF CONTROLLER
1. To Display Maintenance Codes: Press ‘On/Off’ button. To sequence through stored
maintenance codes, press ‘On/Off’ followed by the thermostat button.
2. To Display Water Flow through water heater: Press thermostat button, hold
for 2 seconds and simultaneously press ‘On/Off’ button.
3. To display Outlet Water Temperature: Press