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Timothy BurnsSep 12, 2025
How to fix DHW sensor short error on PEERLESS Boiler?
- JJohn BestSep 12, 2025
If your PEERLESS Boiler displays the error 'DHW SENSOR SHORT', check the harness and sensor.
How to fix DHW sensor short error on PEERLESS Boiler?
If your PEERLESS Boiler displays the error 'DHW SENSOR SHORT', check the harness and sensor.
How to troubleshoot stack sensor short error on PEERLESS Boiler?
If your PEERLESS Boiler displays the error 'STACK SENSOR SHORT', check the harness and sensor.
How to fix return sensor short error on PEERLESS Boiler?
If your PEERLESS Boiler displays the error 'RETURN SENSOR SHORT', check the harness and sensor.
How do I fix supply sensor short error on PEERLESS PureFire PF-80?
If your PEERLESS Boiler displays the error 'SUPPLY SENSOR SHORT', check the harness and sensor.
How to troubleshoot ignition error on PEERLESS Boiler?
If you are experiencing an ignition error with your PEERLESS Boiler, follow these steps: 1. Watch the igniter through the observation window. 2. If no spark is present, check the spark electrode for the proper 3/16" gap. 3. Remove any corrosion from the spark electrode with abrasive. 4. If spark is present but no flame, check the gas supply to the boiler. Check for high or low pressure. 5. If there is a flame, check the flame signal ignition log in the Installer Menu. If values for flame signal are less than 3.1 µA, check wiring connections and clean the harness connector at the control. 6. Determine if gas valve is opening by monitoring gas pressure. 7. Check gas pressure.
How to fix return sensor not connected error on PEERLESS Boiler?
If your PEERLESS Boiler displays the error 'RETURN SENSOR NOT CONNECTED', check the harness and sensor.
How to fix supply sensor not connected error on PEERLESS PureFire PF-80 Boiler?
If your PEERLESS Boiler displays the error 'SUPPLY SENSOR NOT CONNECTED', check the harness and sensor.
How to troubleshoot high return temp on PEERLESS Boiler?
If your PEERLESS Boiler displays 'HIGH RETURN TEMP', check for reversed supply and return piping or a pump installed backwards.
What to do for false flame detected after shutdown on PEERLESS PureFire PF-80 Boiler?
If your PEERLESS Boiler displays 'A19 - FALSE FLAME DETECTED AFTER SHUTDOWN', check the flame sensor and igniter to ensure there is no short to ground. This error may also indicate that the gas valve isn’t closing completely.
Why is the return higher than supply on my PEERLESS PureFire PF-80 Boiler?
If you see 'RETURN HIGHER THAN SUPPLY' on your PEERLESS Boiler, check the system piping to ensure water enters the return connection and exits the supply connection correctly. Also, compare the supply thermistor reading to the temperature gauge; if they don’t match, replace the supply thermistor.
General| AFUE | 95% |
|---|---|
| Fuel Type | Natural Gas or Propane |
| Firing Rate (Input) | 80, 000 BTU/h |
| Modulation Ratio | 5:1 |
| Heat Exchanger Material | Stainless Steel |
| Water Content | 2.5 gallons |
| Vent Diameter | 3" |
| Ignition | Direct Spark Ignition |
| Heating Capacity (Output) | 76, 000 BTU/hr |
| Output BTU/h | 76, 000 BTU/hr |
| Efficiency | 95% AFUE |
| Warranty | 12-Year Limited Warranty |
