19 Errors & Lockouts
Mk8 MM Manual Page | 389
(43) (111) Continuous Pilot is not supported for Fully-Linked Multi-Burner
• Continuous pilot cannot be used in Fully-Linked Multi-Burner operation
• Check options 43 and 111
(43) (135) NFPA Post Purge cannot be optioned with multi-burner
• The multi-burner function can only use standard, not NFA post-purge.
• Check option 43 and option/parameter 135.
(43) (P100) Assured Low-Fire Shut Off not supported for Fully-Linked Multi-Burner
• Assure Low-Fire Shut Off cannot be used with Fully-Linked Multi-Burner operation
• Check option 43 and parameter 100
(44) (52) Differential Firing Rate Limit should only be set on the Multi-Burner master
• Only the Multi-Burner master (multi-burner ID 1 set on option 44) can have Differential Firing Rate Limit
enabled
• Check options 44 and 52
(45) (55) External modulation conflict
• Switched T88 external modulation is not set with permanent external modulation.
• Check options 45 and 55.
(45/55) (16) External modulation conflict
• External modulation cannot be used on any MMs in sequencing.
• Check options 16, 45 and 55
(45) (P72) External modulation and external setpoint both optioned
• External modulation and external setpoint cannot be used simultaneously.
• Check option 45 and parameter 72.
(81, 82, 83, 84) OTC Configuration invalid
• Setpoints at minimum and maximum outside temperatures cannot be set the same.
• Minimum and maximum outside temperatures cannot be set the same.
• Check options 81, 82, 83 and 84
(111) (122) Flame scanner changeover cannot be optioned with no pilot.
• If no pilot is set, then flame scanner changeover cannot be used.
• Check option/parameters 111 and 122.
(111) (130) Single valve pilot cannot be optioned with no pilot.
• If no pilot is set, then gas valve configuration cannot be set for single valve pilot.
• Check option/parameters 111 and 130.
(112, 135) (158) Purge pressure proving timeout shorter than pre-purge time.
• Purge pressure proving timeout must be longer than the pre-purge time
• Check option/parameters 112, 135 and 158.
(118, 135) (158) Purge pressure proving timeout shorter than post-purge time.
• Purge pressure proving timeout must be longer than the post-purge time
• Check option/parameters 118, 135 and 158.
(118) (135) NFPA Post Purge must be at least 15 seconds.
• If NFPA Post-Purge is enabled, then this time must be set to a minimum of 15 seconds.
• Check option/parameters 118 and 135
(125) (150) Valve proving cannot be optioned when fuel type is oil (fuel 1)
• Valve proving can only be used for gas
• Check option/parameters 125 and 150
(126) (151) Valve proving cannot be optioned when fuel type is oil (fuel 2)
• Valve proving can only be used for gas
• Check option/parameters 126 and 151
(127) (152) Valve proving cannot be optioned when fuel type is oil (fuel 3)
• Valve proving can only be used for gas
• Check option/parameters 127 and 152
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