70 🟡 Repair Required
Rinnai Error Code 70: PCB Failure
⚠️ Your Rinnai water heater is experiencing a PCB failure, which has caused it to shut down. This is not an immediate safety risk, but it requires professional repair.
How to Fix Rinnai Code 70
- Step 1: Turn off the power to the water heater at the circuit breaker to prevent any further damage.
- Step 2: Do not attempt to open the water heater or perform any repairs yourself. This can void your warranty and may cause further damage or injury.
- Step 3: Contact a licensed Rinnai technician to diagnose and repair the PCB failure.
What Does Rinnai Error Code 70 Mean?
The error code 70 on your Rinnai water heater indicates a failure of the Printed Circuit Board (PCB), which is a critical component of the unit's control system. When the PCB fails, it can cause the water heater to shut down to prevent any further damage. This error is not typically caused by user error and usually requires a professional technician to diagnose and repair.
Common Causes of Rinnai Code 70
- Wear and tear over time
- Power surges or fluctuations
- Manufacturer defect
- Moisture or water damage
Applicable Rinnai Models
Need a Pro to Fix Rinnai Code 70?
A licensed HVAC technician can diagnose and fix this issue quickly.
Find a Licensed Tech Near You →Replacement Parts for Rinnai Tankless Water Heater Code 70
PCB Assembly OEM: RIN-120012000
Thermal Cutoff Switch OEM: RIN-120012001