TROUBLESHOOTING
PART 7. TROUBLESHOOTING
A. MUNCHKIN ERROR CODE
An error code may occur in the installation of the Munchkin. This condition may lead to a lock out con- dition of the controller, which will need to be manu- ally reset through the S4/Reset button. These tempo- rary codes will help the installer correct the problem before going into a lock out condition, which will require a manual reset.
B. BOILER ERROR
1.When an error condition occurs the con- troller will display an error code on the dis- play module.
2.These error codes and several suggested corrective actions are included in Table 7.1.
3.In the case of E00, E13, and E14 this error, if uncorrected, will go into a fault condition as described is Paragraph C (Boiler Fault).
C.BOILER FAULT
1.When a fault condition occurs the controller will illuminate the red “fault” indication light and display a fault code in the format (Example: F00 ) on the display module.
2.Note the fault code and refer to Table 7.2 for an explanation of the fault code along with several suggestions for corrective actions.
3.Press the reset key to clear the fault and resume operation. Be sure to observe the operation of the unit to prevent a recurrence of the fault.
WARNING
When servicing or replacing any components of this boiler be certain that:
•The gas is off.
•All electrical power is disconnected
DANGER
When servicing or replacing that are in direct contact with the boiler water, be certain that:
•There is no pressure in the boiler. (Pull the release on the relief valve. Do not depend on the pressure gauge reading).
•The boiler water is not hot
•The electrical power is off
WARNING
Do not use this appliance if any part has been under water. Improper or dangerous operation may result. Contact a qualified service technician immediately to inspect the boiler and to repair or replace any part of the boiler which has been under water.
CAUTION
This appliance has wire function labels on all internal wiring. Observe the position of each wire before removing it. Wiring errors may cause improper and dangerous operation. Verify proper operation after servicing.
CAUTION
If overheating occurs or the gas supply fails to shut off, do not turn off electrical power to the circulating pump. This may aggravate the problem and increase the likelihood of boiler damage. Instead, shut off the gas supply to the boiler at the gas service valve.
Code | Description | Duration |
| Corrective Action | ||
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| 1. Check circulation pump operation. | |
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| 2. | Assure that there is adequate flow through the |
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| boiler by accessing the status menu and assuring |
| E00 |
| High Limit Exceeded | 50 Sec. |
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| that there is less than a 50°F rise from the return | |||
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| 3. | thermister to the supply thermister. |
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| Replace switch if faulty. | |
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| Combustion Fan Speed Low. |
| 1. | Check the combustion air fan wiring. |
| E13 |
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| The boiler combustion air fan | 60 Sec. | 2. | Replace the combustion air fan. | |
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| speed less than 70% of expected. |
| 3. | Replace the control board. |
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| Combustion Fan Speed High. The |
| 1. | Check the combustion air fan wiring. |
| E14 |
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| boiler combustion air fan speed is | 60 Sec. | 2. | Replace the combustion air fan. | |
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| more than 130% of expected. |
| 3. | Replace the control board. |
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| Until | 1. | Assure that the system pressure is above 10 psig. |
| PR0 |
| Pressure Switch Open | |||
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| Corrected | 2. | Check for leaks in the system piping. | ||
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| Until | 1. Assure that the vent is not blocked | |
| FLU |
| Blocked Vent Pressure Switch Open | 2. | Check the switch operation by applying a jumper. | |
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| Corrected | ||||
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| (If the switch is not functioning properly, replace it.) | |
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