Rinnai Continuum Series User Manual

REU-2532FFU Series 33 Rinnai
32
Outgoing Water
Temperature Sensor
Faulty
Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
Replace sensor.
33 Heat Exchanger Outgoing
Temperature Sensor
Faulty
Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
Replace sensor.
34
Combustion Air
Temperature Sensor
Faulty
Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
Ensure fan blade is tight on motor shaft and it is in good condition.
Check for restrictions in air flow around unit and vent terminal.
Replace sensor.
52 Modulating Solenoid
Valve Answer Abnormal
Check modulating gas solenoid valve wiring harness for loose or damage terminals.
Ohm out solenoid valve.
61
Combustion Fan Failure Ensure fan motor will turn freely. Motor will operate with a small amount of
resistance.
Check wiring harness to motor for damaged and/or loose connections.
Ohm out motor winding.
71 SV0, SV1, SV2, and SV3
Solenoid Valve Circuit
Faulty
Check wiring harness to all solenoids for damage and/or loose connections.
Ohm out each solenoid.
72 Flame Sensing Device
Faulty
Check micro amps produced by flame rod.
Remove flame rod and check for carbon build-up, clean with sand paper.
Ensure flame rod is touching flame when unit fires.
Check inside burner chamber for any foreign material blocking flame at flame rod.
Check all wiring to flame rod for damage.
Replace flame rod.
LC Scale Build-up in Heat
Exchanger
Turn off power supply, then reapply power; if code reappear separate control wires
from the unit’s power supply.
Flush heat exchanger.
Replace heat exchanger.
No code
Nothing happens when
water flow is activated.
Clean inlet water supply filter.
Ensure you have at least the minimum flow rate required to fire unit.
Check for pipe dope inside water flow control turbine.
On new installations ensure hot and cold water lines are not crossed.
Check for bleed over. Isolate unit from building by turning off hot water line to
building.
Then open your pressure relief valve, if unit fires, there’s a bleed over in your
plumbing.
If a circulating system is in use, it must be isolated also.
Remote control does not light up but you have 12 VDC at the terminals for controls.
Disconnect water flow control motor, then turn on hot water, if unit fires replace water
flow control assembly.
Ohm out the water flow control sensor.

Rinnai Continuum Series Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Maximum Water Pressure	150 PSI
Installation	Indoor or Outdoor
Maximum BTU Input	199, 000 BTU/hr
Electrical Requirements	120V
Warranty	5 years parts, 1 year labor