Camus Hydronics DMH 081 Installation, Operation And Service Manual page 46

SYMPTOM
• Stack temperature has
• The supply/outlet temperature
Temperature
Overshoot
• E01 shown on display. Supply/
Outlet sensor
• E02 shown on display. Return/
Sensor Not
Inlet sensor
Connected • E03 shown on display. Flue
sensor
• E04 shown on display. DHW-
Out sensor
• E11 shown on display. Supply/
Outlet sensor
• E12 shown on display.
Return/Inlet sensor
Sensor Shorted
• E13 shown on display. Flue
sensor
• E14 shown on display. DHW-
out sensor
• A33 shown on display. Fan
Fan Not Turning refuses to rotate
• E51
Reset Button
Error
• Blocked flue error
Air Switch
• Flame detection is present
when no visible signs of a
Flame Detection
flame exist
is out of Sync
• Blank display screen
Blank Display
Screen
FAILURE MODE
exceeded the limit set on the
boiler.
has exceeded the setpoint
temperature specified.
ANALYSIS
• Measure the resistance of the flue sensor at room
temperature, it should be approximately 10k .
• Verify that the system is full of water and that all air
has been properly purged from the system
• Verify that the boiler is piped properly. Refer to
Piping Diagrams in Section 13 of this manual
• Verify that 120 VAC is being supplied to the boiler
pump on a call for heat. If voltage cannot be detected
check wiring
• Verify that the pump is circulating when 120 VAC is
supplied. If so, pump impeller may be stuck. Use a
flat head screwdriver on face of pump to turn impeller
manually
• If 120 VAC is present during a call for heat, but the
pump still does not circulate, replace the pump.
• Replace the DynaMax Controller, if necessary.
• Verify that the sensors are connected
• Verify that they are wired correctly.
• Measure the resistance of the sensors, 10k
sensors.
• Replace the sensor if necessary
• Verify that the sensors are connected
• Verify that they are wired correctly.
• Measure the resistance of the sensors, 10k
sensors.
• Replace the sensor if necessary
• Check fan power wires
• Fan signal wires are interchanged
• Minimum fan speed must be greater than 1500 RPM
• Reset button pressed more than 7 times in one
minute
• Air Switch wire(s) is/are loose
• Air Switch is set too tight, reduce sensitivity by
turning screw ¼ turn counter-clockwise.
• Verify supply voltage for proper polarity.
• Check external wiring for voltage feedback
• Check internal wiring for proper connections
• Check the flame sensor and verify that it is clean
• Replace DynaMax Controller
• Replace fuse with factory 3.15A fuse.
• DO NOT use alternates as it may damage the
DynaMax Controller
42