Nortec NH Series - Manual (Page 69)

10-40
Page 62
2008-08-28
Table 3. NH System Messages (cont)
NHTC Display Message LED state System Action Symptom Diagnosed
E17: Req off current RED Humidifier interrupts operation
and the fault relay is activated. With no system demand, current is
detected in the cylinder.
W18: Foam YEL System will activate selected
foam algorithm. (See Figure 7.) System has detected foaming and will
attempt to self correct if foam mode is
active.
E18: Foam RED System will activate selected
foam algorithm. (See Figure 7.) System has detected foaming and will
attempt to self correct if foam mode is
active.
W19: Cylinder spent YEL The electronics allow the
cylinder to be reset up to four
times before locking out the
humidifier. Electronics have determined cylinder
is spent. Within the next 72 hours the
humidifier will stop.
E19: Cylinder spent YEL, RED Humidifier interrupts operation
and the fault relay is activated. Electronics have determined that the
cylinder is spent.
W20: Conductivity too low YEL Humidifier will continue to
operate on this water supply. Water conductivity is determined to be
less than optimum.
W23: Control sensor broken YEL Humidifier put on standby. After
a timeout period, this warning
becomes a fault. Electronics cannot detect the control
RH sensor connected to the
humidifier.
E23: Control sensor broken RED Humidifier interrupts operation
and the fault relay is activated. Electronics cannot detect the control
RH sensor connected to the
humidifier.
W24: Limit sensor broken YEL Humidifier put on standby. After
a timeout period, this warning
becomes a fault. Electronics cannot detect the limit RH
sensor connected to the humidifier.
E24: Limit sensor broken RED Humidifier interrupts operation
and the fault relay is activated. Electronics cannot detect the limit RH
sensor connected to the humidifier.
W25: 3-day idle drain
activated YEL The humidifier drains the
cylinder after three days of
inactivity. This safety feature drains standing
water.
W26: 3-day forced drain
activated YEL The humidifier drains the
cylinder after three days of
operation. This customer selected feature drains
the cylinder to remove minerals.