68
Error Codes
Description
Corrective Action
E11
Flame signal lost 4 times
Inspect spark electrode and associated wiring for damage and correct
connection, replace if required
Check for correct electrical earthing
Check incoming gas supply pressure is correct refer to section 9.0 gas
supply
Verify the plastic hose from the gas valve to the air inlet is connected and
undamaged
Verify the air intake/flue exhaust pipes are correctly installed and that there
are no obstructions
Check for 24v to the gas valve at the 2 pin connector on the side of the
main control board during ignition. If no voltage present replace the control
board
If 24v present at the main control board, check the wiring between the
board and the gas valve. Replace if required. Do not disconnect the wiring
from the gas valve and attempt to measure a voltage at that point, the
board will detect the gas valve is not connected and display a gas valve
fault.
If 24v is present check the gas valve is opening using a manometer
connected to the outlet of the gas valve. During pre-purge there should be
a negative pressure when the valve is energized there should be a positive
pressure. If these do not occur replace the faulty gas valve.
Inspect flame sensor and associated wiring, replace if required.
Inspect and clean the heat exchanger.
Inspect the burner and clean, replace if required.
Replace the main control board.
E12
Failed main burner ignition attempt 4
times
n05
The fan speed is being increased due
to the flame current going below
5microcamps
E13
The flue temperature has exceeded
121
o
C
Inspect and clean the heat exchanger
Inspect the flue sensor, measure the resistance of the sensor and compare
with table
.,replace if required
Verify the air intake/flue exhaust pipes are correctly installed and that there
are no obstructions
Replace the main control board.
b05
The flue temperature has exceeded
115
o
C
n04
The fan speed is being limited due to
the flue temperature exceeding
100
o
C
E15
The outlet temperature has exceeded
the 98
o
C manual reset high limit
setting
Verify the system is full of water and all air has been purged from the
system, pay particular attention to the EcoShield™ heat exchanger
Verify the water heater has been piped correctly
Check the shunt pump is operating, if not check wiring back to the main
control board
Replace the main control board if required
If the wiring is Ok and there is 230v to the pump replace the pump
Check resistance of water sensors with table
, replace sensor if
required.
b03
The outlet water temperature has
exceeded 90
o
C
n02
The fan speed is being limited due to
the outlet water temperature
exceeding 85
o
C
E18
The control module reads an
excessive DT between the 2 sensors
Check wiring to sensor, make sure all is correctly connected and
undamaged
Check resistance of water sensors with table
required.
Replace control module
E19
One or both flue sensors is open or
shorted
Inspect the flue sensors, measure the resistance of the sensors and
compare with table
.,replace if required
Replace control module
Continued over page
Summary of Contents for EcoShield SHW116-410CE
Page 2: ...2 ...
Page 9: ...9 EXPLODED VIEW DRAWINGS ...
Page 27: ...27 Max distance between brackets ...
Page 28: ...28 ...
Page 29: ...29 ...
Page 34: ...34 ...
Page 47: ...47 13 9 LADDER DIAGRAM LADDER DIAGRAM ...
Page 71: ...71 NOTES ...
Page 72: ...72 N ...
