45
Hold 67: ILK OFF (Flow Switch, LWCO, Gas Pressure Switch, Blocked Flue Switch)
Alert 303: Abnormal Recycle: ILK off during drive to Purge
Alert 304: Abnormal Recycle: ILK off during Measured purge time
Alert 305: Abnormal Recycle: ILK off during Drive to Pre-igntion
Alert 306, 307: Abnormal Recycle: ILK off during Pre-ignition
Alert 308: Abnormal Recycle: ILK off during Main Flame
Alert 309: Abnormal Recycle: ILK off during Ignition Period
This error can indicate a blocked flue or blocked intake condition, low gas pressure switch tripped (optional) or high gas pressure
switch tripped (optional). To identify the safety that is open set the multimeter to Vac and measure the voltage from one contact to
ground. The contacts produce a 24Vac when the circuit is closed.
Is vent and/or air intake
blocked?
YES
Clear vent and/or
air intake
termination
NO
High Gas Pressure Tripped?
YES
High gas pressure
switch (C6097B,
N/C) set to 14” w.c.
NO
YES
Check incoming
gas pressure and
reset high gas
pressure switch
Low Gas Pressure Tripped?
YES
Low gas pressure
switch (C6097A,
N/O) set to 3” w.c.
YES
Check incoming
gas pressure and
reset low gas
pressure switch
NO
Turn blocked flue switch set
screw 1-2 turns clockwise,
until burner stays on at high
fire
Is Blocked flue switch (N/C)
closed when fan is not turning?
NO
Replace blocked flue switch
(P/N: 8021205256)
YES
Summary of Contents for DynaMax DMH081
Page 2: ......
Page 68: ...65 PART 14 EXPLODED VIEW PARTS LIST DYNAMAX HS WALL HUNG...
Page 69: ...66 DYNAMAX HS FLOOR MOUNT...
Page 76: ...73 PART 15 ELECTRICAL DIAGRAMS 15 1 DM 80 299 INTERNAL WIRING DIAGRAM...
Page 77: ...74 15 2 DM 399 800 INTERNAL WIRING DIAGRAM...
Page 78: ...75...