Trouble Shooting
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| Solution |
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Spark will not light | Air in the pilot supply line. | • Purge the line or start ignition several times. | ||||||||||||||||
the pilot after |
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| No spark at pilot burner |
| • Check spark gap. |
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repeatedly pressing |
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| • Check wiring connections to ignitor. | ||||||||||
the spark ignitor. |
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| • Check for spark in location along cable. | ||||||||||
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| Valve. |
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| • Replace the valve. |
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| Over tightened |
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| • Replace the valve and thermocouple interrupter. | ||||||||
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| thermocouple interrupter. |
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| Receiver |
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| • Replace the receiver and reset the receiver’s | ||||||
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| code, refer to MAINTENANCE AND SERVICE - | ||||
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| CHANGING REMOTE HANDSET CODE. | ||||
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Pilot is lit and |
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| Receiver. |
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| • Replace the receiver and reset the receiver’s | |||||||||
control continues |
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| code, refer to MAINTENANCE AND SERVICE - | |||||||||
to spark. Valve |
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| CHANGING REMOTE HANDSET CODE. | ||||||||
shuts off after 10 to |
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30 seconds. Valve |
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operates manually. |
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Pilot |
| is | lit | and | Not | enough | voltage | • Use a digital multimeter set in the mV range | ||||||||||
sparking stops. Valve | generated |
| from |
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| and measure the voltage by connecting the test | ||||||||||
shuts off after 10 to | thermocouple or too much |
| leads to the spade connector. Spade connector | |||||||||||||||
60 | seconds. | Valve | resistance in the circuit. |
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| is located on the outer surface, directly beside | ||||||||||||
does | not | operate | Note: To find which part of |
| the magnet nut (see Figure 80). The available | |||||||||||||
manually. |
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| the | circuit | is | causing | the |
| voltage must be at least 5mV. The manufacturer | ||||||||
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| must specify the drop time for the application. | |||||||||||
Note: | For | manual | problem, | a | checklist | for |
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| The drop time can be measured after the | |||||||||||||||||
operation | turn | the | each | application | can | be |
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| thermocouple is heated. |
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valve | knob | to | the | prepared | using an | Excel |
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manual | position | calculation | available | from |
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and | hold the | safety | Mertik Maxitrol. |
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magnet |
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| open | Possible parts are: ON- |
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with |
| a | pen | for | OFF | switch, | Temperature |
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approximately | 60 | switches, | Thermo | current |
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seconds (see | Figure | connections, Receiver. |
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79). |
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| Figure 79: Valve’s Safety | Figure 80: Voltage | |||
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| Magnet. | Across Valve’s Spade | |||
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| Connector. | |
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| Thermocouple. |
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| • Replace the thermocouple. |
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| Low inlet pressure. |
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| • Confirm the regulator’s pressure and sizing. | ||||||||
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| Replace if necessary. |
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| Valve. |
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| • Replace the valve. Do not over tighten the | ||||||
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| thermocouple interrupter. |
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| BV Only: Spill switch at | • Correct cause of trip and reset switch. | |||||||||||
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| the draft hood may have |
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| tripped. |
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37