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50
ERROR CODES
Hard Faults and Soft Faults can be cleared following two steps:
1.
Unlock the control (by pressing the button for 3 seconds), if
the interface is locked
2.
Press the
and
buttons simultaneously for 3 seconds.
Soft faults are also automatically cleared after 15 minutes after the
fault condition occurred, if the conditions of the faults disappeared.
If the fault condition is still set, the control will attempt to clear the
Soft Faults after another 15 minutes (and so on).
Auto Reset faults are cleared automatically when the fault condition
disappears.
Table 24. Error Codes
Code
Fault description
Meaning
Error type
Clear/Exit
E00
ECO (Dhw High-Limit)
T > Tmax 201°F
Hard Fault, Buzzer beeping
once per second
Manual Action
E01
Flame out of sequence
Flame detected when it is not expected
Soft Fault
Reset in 15 minutes /
Manual action
E02
Repeated Flame Loss
Lost flame 3 times in 5 minutes
Soft Fault
Reset in 15 minutes /
Manual action
E03
Ignition failure
Failed to ignite “n” times in a row. (“n” is
configurable for development only. It can
be 1, 2, 3, 4, or 5)
Soft Fault
Reset in 15 minutes /
Manual action
E05
Blocked flue
Outlet Air Pressure SW open 3rd time in
less than one hour
Soft Fault
Reset in 15 minutes /
Manual action
E06
Blocked flue
Outlet Air Pressure SW open, 1st and 2nd
time
Auto Reset Fault
After post-purge
E07
Tank Temperature Probe
(NTC) failure
Tank Temperature Probe (NTC) open or
short or sensed temperature difference >
4°C
Auto Reset Fault
When condition corrected
E10
Water leak detected
Vdc < 1.45
Warning, Buzzer beeping
continuously
When Vdc > 1.55
E11
LDM open
Vdc > 2V
Warning, Buzzer beeping once
per second
When Vdc < 1.8V, or long
press on “Minus”
E19
Missing short circuit be-
tween X6.6and X6.12
Missing short circuit between X6.6and
X6.12
Hard Fault, Buzzer beeping
once per second
Manual Action
E20
Blower not running
Blower speed < 200 rpm when blower
powered
Hard Fault, Buzzer beeping
once per second
Manual Action
E21
Blower speed error
Read speed not /- 10% of the Set
speed for more than 10 seconds
Soft fault 3 times / Then Hard
Fault
Reset in 15 minutes /
Manual Action
E22
Blocked air inlet
Inlet Air Pressure SW open 3rd time in less
than one hour
Soft Fault
Reset in 15 minutes /
Manual Action
E23
Blocked air inlet
Inlet Air Pressure SW open, 1st and 2nd
time
Auto Reset Fault
After ventilation as long as
post-purge