Owner Manual

Refer to the supplemental programming guide for programming directions.
Error Messages
Error Code
Message
HL
Warning! High Limit Error. The water has reached an unsafe
temperature.
FLO
Water Flow has not been detected. Heater will not activate.
HR
Danger! Relay stuck in on position.
OH
Warning! Over Heat Error. The water has reached an unsafe
temperature.
Prr
Temperature probe malfunction.
AOH
Internal pack temperature high.
FLC
Flow Switch Closed. Water flow has been detected when none
should be present.
SP in
Input voltage issue. The voltage running to the spa is wrong.
FrEr
Input voltage frequency is out of range.
RH NC
Communication error in in.therm xm2 module.
RH ID
in.xm2 in.therm incompatible.
SC ER
Learning mode error.
F1
Fuse 1 blown.
F2
Fuse 2 blown.
F3
Fuse 3 blown.
Hr
Danger! Thermal fuse error
UPL
The spa control does not have valid software. Firmware
upgrade required.
BL
The spa control does not have valid software. Firmware
upgrade required.