Cal Spas Pneumatic Series Owner's Manual page 171

5000, 7000 and 9000 Electronic Operation
Freeze Protection
If the temperature sensors detects a drop of 44˚F on the heater, the pump will automatically power-up to provide
freeze protection. The equipment will stay "ON" for 4 minutes after the sensor detects a water temperature of
45˚F or higher. In colder climates, an optional additional freeze sensor may be added to protect against freeze
conditions that may not be sensed by the standard sensor. AUX freeze sensor protection acts in a similar
fashion, with the expected temperature threshold determined by the switch and without a 4-minute delay in
turn-off.
Diagnostic Messages
5000 Control Panel
Message
OH
FL
Sn
Sf
LED
7000 and 9000 Control Panels
Message
No Display
OHH
OHS
ICE
SnA
Snb
SnS
HFL
LF
"CCL"
"CSh"
"Car"
Owner's Manual
Meaning
Overheat protection (spa is shutdown) DO NOT ENTER THE WATER! If the spa has
reached 112˚F (45˚C), remove the spa cover to cool the water. Overheating may occur
if the filter cycle is set too long. At 110˚F (43˚C), the spa should reset itself. If the
high-limit sensor detects 118˚F (48˚C) at the heater, the spa will shut down. When the
heater cools down to 110˚F (43˚C), press any button to reset the spa. If the spa will not
reset, then shut the power off to the spa and call your dealer of service organization.
Flow Detection Switch. A pressure switch is working. Call your dealer or service
organization.
Sensor (Spa is shut down). The high limit sensor or water temperature sensor is not
working. Call your dealer or service organization.
Vacuum Switch (Spa is shut down). The LED will show "SF" as soon as the vacuum
switch closes. All functions will turn off and the system will be disabled until a panel
button is pressed.
LED indicator light. There are LED indicator lights on the topside panel
corresponding to heat, safety suction, and ozone functions. These are not service
indicators, but instead light to display that the corresponding feature is in ready-to-
operate condition.
Meaning
No power
"Overheat" The spa will shut down if the sensor detects 118˚F at the heater.
"Overheat" The spa will shut down if the sensor detects that the water is 110˚F.
"Ice" Potential freeze condition.
Spa is shut down. The sensor that is plugged into Sensor "A" jack is not working.
Spa is shut down. The sensor that is plugged into Sensor "B" jack is not working.
Sensors are out of balance. If this is alternating with the temperature, it may just be a
temporary condition. If the display shows only this message (periodically blinking),
the spa will shut down.
A substantial difference between the temperature sensors was detected. This could
indicate a flow problem.
Persistent low flow patterns (display on the fifth occurrence of the "HFL" message
within 24 hours). Heater is shut down, but other spa functions continue to run
normally.
Check Chlorine.
Check Shock.
Check Aromatherapy
Owner's Manual
Page 21