54
1. Disconect electrical power.
2. Wait 10 seconds and reconnect electrical power.
3. Press and hold both the Mode and Maximum Manifold Pressure Set Button simultaneously for more than 5 seconds.
(This procedure has to be perfomed within 10 minutes after reconnecting the power.)
How to reset the lock of the unit (for error code 908 and 99)
Mode Button
Maximum Manifold
Pressure Set Button
Summary of Contents for NRC661-DV
Page 17: ...NR501 OD NR662 OD Thermistor Cold Water Thermistor Hot Water Gas Proportioning Valve 17...
Page 19: ...19 5 Operation Flow Chart Water heating Shutdown procedure Ignition operation NR501 OD...
Page 20: ...Water heating Shutdown procedure Ignition operation 20 NR662 OD...
Page 71: ...located 71...