LWCO Option Card, Low Probe Signal
Warning, level monitoring signal is low. The probe may be dirty. Fluxes or oils used during the construction of the boiler or installation of system piping can coat the probe, preventing signals from being received by the LWCO Option Card. Add a cleaning solution, (such as water and tri-sodium phosphate or consult the boiler manufacturer), to the system. Heat and circulate this solution for at least one hour before draining and completely flushing the system with clean water. Remove the probe and thoroughly wipe it with a clean rag. Refill the system and test for proper operation.
