46
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
The flow switch is not closed or the low water cutoff (LWCO, optional) was tripped. This is an automatic reset error and as soon as
flow is proven this error resolves itself. 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 pump powered?
NO
Check pump wiring
and pump delay relay
YES
Is there a current
transformer
NO
Check operation of
paddle style flow
switch installed on
outlet of DynaMax HS
YES
Use meter to verify
amperage draw on pump
and verify it with rating label
on pump
NO
Check that automatic
air vent thumbscrew is
loose
YES
YES
Purge air from water lines
Is there a double loop through
the current transformer?
YES
Check for contact closure
across terminals 7 and 8 on
field terminal board (perform
this step after verifying
paddle style flow switch is
operational)
NO
Turn off power to boiler
and loop Black 16 wire
twice through current
transformer
NO
Check wiring from
current transformer or
paddle flow switch to
field terminal board
YES
Check for 24Vac signal at
J5-1
YES
Replace ignition
control
NO
Check wiring between green
field terminal board and
ignition module
NO
Insert jumper wire
across terminals 7 and
8 on field terminal
board (temporary
measure)
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...
