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| TROUBLESHOOTING | |
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Code | Description |
| Remedy |
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| 1. | Check circulation pump operation |
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| High Limit Exceeded. | 2. | Assure that there is adequate flow through the boiler by accessing the |
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| F00 |
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| status menu and assuring that there is less than a 50°F rise from the |
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| 3. | return thermister to the supply thermister. |
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| Check thermister reading on supply thermister. Replace switch if faulty. |
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| 1. | Push the red reset button on the switch. |
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| 2. | Check the flue temperature during operation using a combustion |
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| F01 |
| Vent Temperature Limit Exceeded. | |||
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| analyzer. |
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| 3. |
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| Replace the switch if faulty. |
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| Interrupted or Shorted | 1. | Check the electrical connection to the thermister on the outlet manifold. |
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| F02 |
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| Supply (Outlet) Thermister. | 2. | Replace thermister if necessary. |
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| Interrupted or Shorted | 1. | Check the electrical connection to the thermister on the inlet manifold. |
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| F03 |
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| Return (Inlet) Thermister. | 2. | Replace thermister if necessary. |
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| Supply (Outlet) | 1. | Check circulation pump operation. |
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| 2. | Assure that there is adequate flow through the boiler by accessing the |
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| F05 | |||||
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| Temperature exceeds 230°F. |
| status menu and assuring that there is less than a 50°F rise from the |
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| return thermister to the supply thermister. |
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| Return (Inlet) Temperature | 1. | Check circulation pump operation. |
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| 2. | Assure that there is adequate flow through the boiler by accessing the |
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| F06 |
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| Exceeded 230°F. |
| status menu and assuring that there is less than a 50°F rise from the |
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| return thermister to the supply thermister. |
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| No flame detected – The boiler will | 1. Watch the igniter through the observation window provided. |
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| 2. | If there is no spark, check the spark electrode for the proper ¼” gap. |
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| make three attempts at ignition | 3. | Remove any corrosion from the spark electrod and flame rectifier probe. |
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| F09 |
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| before the control goes into this | 4. | If there is a spark but no flame, check the gas supply to the boiler. |
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| lockout condition. | 5. | If there is a flame, check the flame sensor. |
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| 6. | Check any flue blockage or condensate blocks. |
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| 1. Monitor the gas pressure to the unit while in operation. |
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| 2. | Assure that the flame is stable when lit. |
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| Loss of Flame Signal – The boiler | 3. | Check to see if the green light on the display module is out while the |
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| boiler is running. |
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| will relight 4 times before the |
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| F10 |
| 4. | If the green light doesn’t come on or goes off during operation check |
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| control goes into this lockout |
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| the flame signal on the status menu. |
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| condition. | 5. |
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| If the signal reads less than 1 microampere, clean the flame rectifier |
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| 6. | probe. |
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| If the flame rectifier probe continues to read low, replace it. |
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| 1. Turn the gas off to the unit at the service valve. |
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| False Flame Signal – The boiler will | 2. | If the flame signal is still present replace the igniter. |
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| 3. | If the flame signal is not present after turning off the gas supply, check |
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| F11 |
| lock out if it senses a flame signal |
| the gas valve electrical connection. |
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| when there should be none present. | 4. If there is no power to the gas valve, remove the valve and check for |
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| 5. | obstruction in the valve seat or replace the gas valve. |
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| Turn the gas on at the service valve after corrective action is taken. |
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| Combustion Fan Speed Low – The |
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| boiler will lock out if it senses that | 1. | Check the combustion air fan wiring. |
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| F13 |
| the fan speed is less than 70% of | 2. | Replace the combustion air fan. |
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| expected rate for more than 60 | 3. | Replace the control board. |
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| seconds. |
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| Combustion Fan Speed High – The | 1. | Check the combustion air fan wiring. |
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| boiler will lock out if the fan speed is |
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| F14 |
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| more than 130% of expected rate | 2. | Replace the combustion air fan. |
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| for more than 60 seconds. | 3. | Replace the control board. |
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| 1. Make sure the connector is correctly connected to the gas valve. |
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| 2. | Check the electrical wiring from the valve to the control board. |
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| F18 |
| Gas Valve Error | |||
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| 3. | Replace the low voltage wiring harness assembly. |
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| 4. | Replace control board. |
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| Watchdog | Call factory for further assistance. |
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| F30 | |||||
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| Parameter Memory | Call factory for further assistance. |
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| F31 | |||||
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| Parameter Memory Write Error | Call factory for further assistance. |
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| F32 | |||||
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| Programming Error | Call factory for further assistance. |
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| F33 | |||||
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