Camus Hydronics DRH300 Installation, Operation And Service Manual page 61

Alert 354: Abnormal Recycle Delta-T limit
This safety was breached as the inlet and outlet temperature difference exceeded 40
heat exchanger. Before this error appears, the combustion air blower will slow down in an effort to prevent such an error from
occurring.
Verify pump
motor load to
pump rated
load
Current reading
within spec
Check pump curves to
compare with flow and
pressure drops in Part 4
of Dynaforce® I&O
Low current reading
Out of spec
- Purge air from water lines
- Check pump wiring
- Check pump wiring
Upgrade Pump
o
F. This is done to prevent damage to the
55