C series cool surface system
front vent 50-3463 (20 pages)
Summary of Contents for Enviro DEXEN 8K1N
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PLEASE KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE DEXEN TROUBLESHOOTING MANUAL Dexen Valve System *For authorized gas technicians use only* 50-4252 Version Française: www.enviro.com/fr.html...
Table of Contents Table of Contents ������������������������������������������������������������������������������������������������������������������� 2 Introduction ��������������������������������������������������������������������������������������������������������������������������� 3 Use of This Guide �������������������������������������������������������������������������������������������������������������������� 3 Communicating with the Owner ������������������������������������������������������������������������������������������������ 3 System Basics ������������������������������������������������������������������������������������������������������������������������ 4 Ignition Control Components ����������������������������������������������������������������������������������������������������� 4 Wireless Control Components ���������������������������������������������������������������������������������������������������� 4 Wireless Controls ��������������������������������������������������������������������������������������������������������������������� 5 Ignition Control Module ������������������������������������������������������������������������������������������������������������...
Introduction se of Uide This guide provides an overview of the Dexen System with details of the function of each compo- nent, as well as a troubleshooting steps to a handful of possible problem scenarios� This guide is intended to be a tool to help educate and aid in the proper diagnosis of problems within the Dexen system to allow for the accurate replacement of components�...
System Basics ireless onTrols Dexen 8K1N - Complete IPI System 6VDC Power Supply Battery Pack (4 X AA) Flame Sensor Wall Switch Pilot In (Unused) Spark Ignition 8K1N Ignition Control Module Battery (+) Battery (-) RC300 Remote Control AUX300 – Auxiliary Control Module...
System Basics GniTion onTrol odUle Figure 3: Control Module 1� Igniter: Sparks when commanded via remote control or manual control module switch to turn on main burner� Voltage through the wire to igniter on pilot assembly creates spark to ignite gas released to pilot assembly�...
System Basics alVe wiTh Tepper oTor Figure 5: Dexen Gas Valve 1� Pilot Solenoid: Orange in colour� Stamped with “NAT”, factory default is set for Natural Gas� 2� Inlet Pressure Tap: Used to test the pressure at the inlet� 3� Manifold Pressure Tap: Used to test the pressure at the manifold� 4�...
Possible Scenarios This guide will go over five possible scenarios of problems that could arise� It will list various ways to troubleshoot the problem to determine the root cause of the issue� The possible scenarios are: • Scenario #1: Pilot won’t light, no spark, no module beep •...
Scenario #1 ’ roblem iloT won T liGhT no spark no modUle beeps Possible Causes: 1� Control Module selector switch not set properly� 2� Loose or improper wiring� 3� Optional wall switch used, wired incorrectly 4� No power from junction box� 5�...
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Check the connection and continuity of all wiring supplying the voltage within the system� Use the wiring diagram see below in Figure 9� Dexen 8K1N - Complete IPI System 6VDC Power Supply Battery Pack (4 X AA) Flame Sensor...
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Scenario #1 Wall Switch Battery Pack (4 X AA) 8K1N Ignition Control Module Battery (+) Battery (-) Figure 10: Wall Switch - Correct Wiring MH3V Gas Valve 4, 5, 6. n 6Vdc p ower UncTion ower ower Upply Switch the control module to “OFF”, wait 5 sec- onds, then switch to “ON”�...
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Scenario #1 7. f eTTinG wiTch on odUle amaGed or Ully nGaGed Check that the fuel setting switch is not damaged and that it is properly engaged to the correct set- ting� See Figure 13 & Figure 14 below� Figure 14: Fuel Setting Switch Lift face plate using small athead screwdriver Figure 13: Control Module - Fuel Setting Switch Location...
Check the connection and continuity of all wiring supplying the voltage within the system� Use the wiring diagram see below in Figure 16� Dexen 8K1N - Complete IPI System 6VDC Power Supply Battery Pack (4 X AA) Flame Sensor...
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Scenario #2 2. i GniTer ire is oose isconnecTed horTed Switch the control module to “OFF”, wait 5 seconds, then switch to “ON”� If the diagnostic light blinks red three times then goes into lockout mode (red/green flashing light), the igniter wire may be loose or disconnected�...
Scenario #3 roblem iloT sparks bUT piloT will noT liGhT Possible Causes: 1� Gas supply� 2� Faulty module voltage to valve� 3� Faulty valve� *Note* • Disconnect power to the system prior to disconnecting any components by switch the ON/ OFF/REMOTE module switch to the OFF position�...
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Scenario #3 Table 1: Inlet & Manifold Pressures for NG and LP configurations Natural Gas (NG) Propane (LP) MAX: 7 inch W�C� (1�74 kPa) MAX: 11 inch W�C� (2�74 kPa) Inlet Pressure MIN: 4�5 inch W�C� (1�12 kPa) MIN: 10�4 inch W�C� (2�59 kPa) MAX: 3�5 inch W�C�...
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Scenario #3 3. f aUlTy alVe iloT olenoid To check the pilot and burner solenoids, disconnect the wires from the valve� Adjust the multi-meter to read Ohms and measure the resistance between the pilot/burner solenoid and the body of the valve�...
Scenario #4 roblem iloT liGhTs bUT conTinUes To spark and main bUrner will noT iGniTe Possible Causes: 1� Gas Supply� 2� Flame Sensor shorted or disconnected� 3� Poor flame rectification or contaminated sensor� 4� Faulty valve� *Note* • Disconnect power to the system prior to disconnecting any components by switch the ON/ OFF/REMOTE module switch to the OFF position�...
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Scenario #4 Table 2: Inlet & Manifold Pressures for NG and LP configurations Natural Gas (NG) Propane (LP) MAX: 7 inch W�C� (1�74 kPa) MAX: 11 inch W�C� (2�74 kPa) Inlet Pressure MIN: 4�5 inch W�C� (1�12 kPa) MIN: 10�4 inch W�C� (2�59 kPa) MAX: 3�5 inch W�C�...
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Scenario #4 3. p lame ecTificaTion or onTaminaTed ensor If the flame sensor is contaminated it will prevent system continuity and the control module will go into lockout after 60 seconds� Any visible carbon or oxide buildup found on the flame sensor will need to be cleaned with emery cloth�...
Scenario #5 roblem iloT liGhTs sTops sparkinG and piloT remains liT Urner will noT liGhT Possible Causes: 1� Faulty module� 2� Faulty valve� *Note* • Disconnect power to the system prior to disconnecting any components by switch the ON/OFF/ REMOTE module switch to the OFF position� •...
Scenario #5 2. f aUlTy alVe Urner olenoid To check the pilot and burner solenoids, disconnect the wires from the valve� Adjust the multi-meter to read Ohms and measure the resistance between the pilot/burner solenoid and the body of the valve�...
Diagnostic Codes Table 3: Control Module - Diagnostic Code Troubleshooting CODE RESPONSE ERROR CAUSE ERROR RESOLUTION 1 Flash Module flashes error 1� Fuel-type selector in 1� Verify that the selec- code and goes into lock- incorrect position� tor stops at the correct out mode�...
Replacement Parts Table 5: Dexen Replacement Parts Reference # Part Description Part # MH3V Gas Valve w/ Harness 50-4152 RC300 Remote 50-4153 8K1N Ignition Module 50-4154 8K1N-PVI Ignition Module 50-4161 AUX300 Module 50-4155 Battery Holder 50-4156 6V Power Supply 50-4157 Dexen NG to LP Conversion (Stepper Motor Kit) 50-4148 Dexen LP to NG Conversion (Stepper Motor Kit)
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