Why does my Burnham K2WTC display show **00FF or **ERFF?
If your Burnham Boiler displays “00FF” or “ERFF”, it means the display has lost communication with the control. Check for a loose or defective display harness, or a defective display or control.
What does ER0011 mean on my Burnham Boiler?
If your Burnham Boiler displays ER0011, the adjustment mode password has timed out. Simply cycle power to the display to restore operation.
What does error code ER0012 mean on a Burnham K2WTC Boiler?
If your Burnham Boiler displays ER0012, it indicates a control failure, meaning the control is defective.
Why is my Burnham Boiler not providing enough heat?
If your Burnham Boiler isn't providing enough heat, first check the thermostat or zone wiring for any loose connections, incorrect wiring, or if the thermostat/zone control is faulty. Also, check if the water flow through the system loop is too low or non-existent due to a malfunctioning system circulator, trapped air, or zone valve failures. This issue might occur if the heating load is below the boiler’s minimum firing rate. Another potential cause is a defective diverting valve or a loose electrical connection to the valve. If the boiler is responding to a DHW demand, it will not provide space heat, but the priority time can be shortened.
What to do if my Burnham K2WTC has no hot water?
If you're not getting hot water from your Burnham Boiler, start by verifying that the draw rate through the boiler itself is at least 0.5 GPM. Keep in mind that a higher draw might be needed at the fixture. Also, check for a defective DHW flow switch or a loose connection at the switch. You can also try to increase the priority time.
Why is my Burnham Boiler producing inadequate hot water?
If you're experiencing inadequate hot water at the fixtures with your Burnham Boiler, note that this is normal at very low draw rates as the boiler will cycle on and off. Check for a misadjusted or defective tempering valve. It is also possible that the DHW draw and/or temperature rise is in excess of the capacity. Other potential issues include a mixing valve set too low, a DHW setting on the boiler lower than, or too close to, the tempering valve setting, or a fouled plate heat exchanger.
How to fix a completely dark display on my Burnham Boiler?
If the display on your Burnham Boiler is completely dark, the fan is off, the LWCO lights are off, and there's no green power light, first check the breaker and wiring between the breaker panel and the boiler to ensure there is 120Vac power. Also, inspect the high voltage fuse, and replace it if blown.
What to do if my Burnham K2WTC Boiler display is dark but the fan is running?
If the display on your Burnham Boiler is completely dark but the fan is running, there might be no 24Vac power to the control. Check for loose 120Vac connection wiring between the boiler J-Box and the transformer, as well as loose 24Vac connection wiring between the transformer and the control.
Why is the green power light blinking on my Burnham K2WTC control?
If the green power light on your Burnham Boiler control is blinking, it indicates a control fault. Try disconnecting all terminals except 24VAC to power the control. The green light should be steady. If it is not, then the control is defective. If steady, start plugging in all the connectors while watching the green light. When faulty wiring reconnected, green light will begin to flash.
What causes a dark display on a Burnham K2WTC when it still fires?
If the display on your Burnham Boiler is completely dark, but the boiler still fires, this indicates there may be no 5 Vdc power to the display. Check for loose 5 Vdc connection wiring between the display and the control. The display or control could also be defective.
General| Model | K2WTC |
|---|---|
| Fuel Type | Natural Gas or Propane |
| AFUE | 95% |
| Heating Capacity | Varies by model size |
| Water Connection Size | 2" NPT |
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