– 69 –
T5 sensor being viewed
repeatedly alternates, sensor then temperature.
Fault Count Status
– The control counts the
number of times a fault is recorded. A fault is not
displayed to the consumer until 10 counts have
been recorded to ensure a true failure has occurred
(except 5 fault counts for dirty filter).
For example, if the upper element were to fail, each
time the control energized the upper element, but
the element failed to draw current, the count would
increase by 1.
Note:
When a count is recorded, the control
automatically switches to another heating source or
load for that heating cycle. This ensures hot water is
supplied unless all three heating sources have failed
(compressor, upper and lower heating elements).
See pass/Fail Component Operation table, this
section.
The count for any given component can only
increment by 1 for every heating cycle. Under
normal use, water heaters generally experience 2 or
3 heating cycles per day, so it could take 3 to 5 days
for a fault to be displayed to the consumer.
An important note on faults counts:
If the control has recorded a fault for a specific
component, but the next time the heating cycle
starts, that component operates normally, the fault
count would decrease by 1.
For example, if the control records a F3 (compressor
failure) for the first 3 heating cycles, the fault count
would be 3. if the 4th time the compressor started,
the control would subtract 1 and the total count
would be 2. if the compressor failed again on the
5th start, the total count would be 3 (the count will
never be below zero).
Fault Counts when power is turned off:
I
f there is a fault count registered in the control (10
count) and power is turned off, that fault count will
only decrement by 1 when power is re-applied if the
fault code is not cleared using the diagnostic mode.
Example: if F4 (bad fan) is in the display due to a
fault count of 10 and power is removed so the fan
motor can be replaced, when power is applied
again, F4 will not be displayed because the fault
count will be at 9.
T5 sensor temperature being viewed
pressing the
UP
arrow button will allow viewing of
the previous sensor(s) in descending order.
(Continued Next page)
