2015 Portable Spa
LTR20151001, Rev. A
Operating
Your Spa
www.calspas.com
28
Diagnostic Messages
Message
Meaning
---F - ---C
Water temperature is unknown. After the pump has been running for
one minute, the temperature will be displayed.
Possible freezing condition
A potential freeze condition has been detected, or the Aux Freeze Switch
has closed. All water devices are activated. In some cases, pumps may
turn on and off and the heater may operate during Freeze Protection.
This is an operational message, not an error indication.
The water is too hot
The system has detected a spa water temp of 43.5°C (110°F) or more,
and spa functions are disabled. System will auto reset when the spa
water temp is below 42°C (108°F). Check for extended pump operation
or high ambient temp.
Water flow is low
There may not be enough water flow through the heater to carry the
heat away from the heating element. Heater start up will begin again
after about 1 min. See “Flow Related Checks” below.
Water flow has failed
There is not enough water flow through the heater to carry the heat
away from the heating element and the heater has been disabled. See
“Flow Related Checks” below. After the problem has been resolved, you
must press any button to reset and begin heater start up.
The heater may be dry
Possible dry heater, or not enough water in the heater to start it. The
spa is shut down for 15 min. Press any button to reset the heater start-
up. See “Flow Related Checks” below.
The heater is dry
There is not enough water in the heater to start it. The spa is shut down.
After the problem has been resolved, you must clear the message to
restart heater start up. See “Flow Related Checks” below.
The heater is too hot
One of the water temp sensors has detected 48°C (118°F) in the heater
and the spa is shut down. You must clear the message when water is
below 42°C (108°F). See “Flow Related Checks” below.
Sensors are out of sync
The temperature sensors MAY be out of sync by 1°C or 2°C (2°F or
3°F). Call for service.
Sensors are out of sync --
Call for service
The temperature sensors ARE out of sync. The fault above has been
established for at least 1 hour. Call for service.
Sensor A Fault, Senor B Fault A temperature sensor or sensor circuit has failed. Call for service.
Communications error
The control panel is not receiving communication from the System. Call
for service.
°F or °C is replaced by °T
The Control System is in Test Mode. Call for service.
Flow-Related Checks
Check for low water level, suction flow restrictions, closed valves, trapped air, too many closed jets and
pump prime. On some systems, even when spa is shut down by an error condition, some equipment may
occasionally turn on to continue monitoring temperature or if freeze protection is needed.
Summary of Contents for Home Resort Z-524L
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