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Rinnai Error Code Technical read-out: Technical read-out (Boiler)

Updated · by Aurora Star Tech Inc.

Rinnai error code Technical read-out on a boiler means: Technical read-out. It is also called Rinnai diagnostic code Technical read-out.

Low severityBoilerE-Combi (E50CRN · E75CRN/E75CRP · E110CRN/E110CRP)

Homeowner? What Rinnai code Technical read-out means for you

Usually minor Your boiler is reporting: Technical read-out. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
  • Look at the pressure gauge on the boiler. If it reads much lower than usual or near zero, or water is leaking, call a technician.
  • Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
  • Check that the boiler gas valve is open (handle in line with the pipe).
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Rinnai error code Technical read-out mean?

Left: operation status digit; right: supply temperature in F, alternating with water pressure in PSI. Toggle with STEP held 5 s.

Applies to: E50CRN; E75CRN; E75CRP; E110CRN; E110CRP

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Other Rinnai Boiler codes

CodeMeaning
Status 8Pump overrun, hot water
Status 9Burner off, supply temperature too high
Status AAutomatic de-aeration program
StBYStandby / exit to read-out
STOPFill target reached
SW1-SW3PC board buttons (SW1, SW2, SW3)

All Rinnai Boiler error codes →

Rinnai code Technical read-out: homeowner questions

What does Rinnai code Technical read-out mean?

Technical read-out. Left: operation status digit; right: supply temperature in F, alternating with water pressure in PSI. Toggle with STEP held 5 s.

Is it safe to keep using my boiler with code Technical read-out?

Usually yes. Code Technical read-out is normally minor, but if it keeps coming back have it checked.

Can I reset Rinnai code Technical read-out myself?

You can try one reset (power off for 30 seconds, then on). If Rinnai code Technical read-out comes back, the cause is still there and a licensed technician should check it.

Who can fix Rinnai code Technical read-out near me?

Aurora Star Tech Inc. repairs Rinnai boilers in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: Boiler Not Heating: What to Check

Troubleshooting guides

Source: Rinnai E-Combi Series Installation & Servicing Instructions (8U516009 V0116), p.50. 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.

Emergency Boiler Repair

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