Diagnostic Codes - Rinnai SENSEI RU199i Manual De Instalación Y Operación

4.5 Diagnostic Codes

To display diagnostic codes:
1. Turn off the water heater by pressing the "On/Off" button.
2. Press and hold the "On/Off" for 2 seconds and then the
button simultaneously.
3. The last nine maintenance codes display and flash one after the other.
4. To exit diagnostic codes and return the water heater to normal
operation, press and hold the "On/Off" button for 2 seconds and
then the (Up) button simultaneously.
5. Turn on the water heater by pressing the "On/Off" button.
WARNING
03
Power interruption during bath fill
(Water will not flow when power returns)
•
Turn off all hot water taps. Press ON/OFF twice.
05
By-Pass Flow Control
•
Measure resistance values of the by-pass flow control.*
•
Replace By-Pass flow control device.
Air Supply or Exhaust Blockage/Condensate Trap
1 0
is Full
•
Ensure condensate line is not blocked.
•
Ensure internal air filter is clean with no obstructions.
(Indoor Water Heaters Only)
•
Ensure High Altitude setting. (See Parameter Settings)
•
Ensure Combustion air and Exhaust vents are not blocked
and approved venting materials are being used. (Indoor
Water Heaters Only)
•
Ensure vent length is within limits. (Indoor Water Heaters
Only)
•
Check fan for debris and ensure wheel turns freely.
•
Verify check valve is not stuck between fan casing and
burner body.
1 1
No Ignition (Heater Not Turning On)
•
Check that the gas is turned on at the water heater,
meter, or cylinder.
•
If the system is propane, make sure that gas is in the tank.
•
Ensure gas type and inlet gas pressure are correct.
•
Bleed all air from gas lines.
•
Check the ground wire for the PC Board.
•
Ensure flame rod wire is connected.
•
Ensure igniter is operational.*
•
Check gas solenoid valves for open or short circuits.*
•
Verify gas orifice is correct.
* See "Electrical Diagnostics" on Technical Data Sheet located on inside front cover of water heater.
Rinnai Tankless Water Heater Installation and Operation Manual
Some of the checks below should be performed by a licensed professional. Consumers
should never attempt any action that they are not qualified to perform.
(Up)
2
1
1 2
No Flame
•
Check that the gas is turned on at the water heater, gas
meter, or cylinder.
•
If the system is propane, make sure that gas is in the tank.
•
Ensure flame rod wire is connected.
•
Ensure gas type and inlet gas pressure is correct.
•
Bleed all air from gas lines.
1 4
Heat Exchanger Overheat
•
Measure resistance of Overheat Switch.*
•
Check heat exchanger surface for hot spots which indicate
blockage due to scale build-up.
•
Refer to instructions in manual for flushing heat exchanger.
Hard water must be treated to prevent scale build up or
damage to the heat exchanger.
•
Ensure it is not in forced Hi setting.
1 5
Venturi Control
•
Ensure the Venturi motor is operating correctly.*
•
Replace gas valve assembly.
•
Clear diagnostic code by resetting the main power supply to
the water heater.
1 6
High Outgoing Temperature
(safety shutdown because water heater is too hot)
•
Confirm fan motor is functioning correctly.
•
Replace the gas valve assembly.
1 7 Venturi Blockage
•
First, follow the recommended solutions for Diagnostic Code
10.
•
If the Code 10 solutions do not correct the problem, ensure
the Venturi is not blocked.
•
Please call Rinnai technical department.
1 9
Electrical Grounding
•
Check all components for electrical short.
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