50
Figure 14.0a Figure 14.0b
1. Open Flow Switch: (Heater is deacvated. The filter/circulaon may also be deacvated).
The flow switch is malfunconing open, the circulaon pump’s filter cartridge is exces-
sively dirty or an air lock condion has occurred at the circulaon pump intake. Contact
your authorized dealer or service organizaon.
2. Closed Flow Switch: (Heater is deacvated. The filter/circulaon may also be deacvat-
ed). The flow switch is malfunconing closed. Contact your authorized dealer or service
organizaon.
3. Toggling Flow Switch: (Heater is deacvated). The flow switch is behaving erracally.
Heater is disabled, check for dirty filter. Make sure to clean the filter(s) and correct prop-
er water level before contacng your dealer or service organizaon.
4. Shorted Hi-limit Temp Sensor: The hi-limit temperature sensor is not funconal. Heater
is disabled. This must be repaired only by a qualified authorized service organizaon or
service technician.
5. Open Hi-limit Temp Sensor: The hi-limit temperature sensor is not funconal. Heater is
disabled. This must be repaired only by a qualified authorized service organizaon or ser-
vice technician.
6. Shorted Water Temp Sensor: The temperature sensor is not funconal. Heater is disa-
bled. This must be repaired only by a qualified authorized service organizaon or service
technician.
7. Open Water Temp Sensor: The temperature sensor is not funconal. Heater is disabled.
This must be repaired only by a qualified authorized service organizaon or service tech-
nician.
8. Closed Flow Switch on Start-up: Flow switch is non-funconal. Closed or shorted flow
switch on system start-up (system disabled). Contact your authorized dealer or service
organizaon.
9. Frozen on Start-up: Flow switch is non-funconal. Shorted flow switch on system start-
up (system disabled) and freeze condion detected. Contact your authorized dealer or
service organizaon.