Legacy Whirlpool LW 524 Owner's Manual page 57

Spa Controls
Heater Related Messages
HEATER FLOW IS REDUCED
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.
HEATER FLOW IS REDUCED*
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.
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.
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 press any button to reset and restart heater. See "Flow Related Checks"
below.
HEATER IS TOO HOT*
One of the water temp sensors has detected 118°F (47.8°C) in the heater and the spa is shut
down. You must press any button to reset when water is below 108°F (42.2°C). See "Flow Related
Checks" below.
A RESET MESSAGE MAY APPEAR WITH OTHER MESSAGES
Some errors may require power to be removed and restored.
FLOW-RELATED CHECKS
Check filters for possible blockage. Try cleaning or replacing filters (especially if the spa is equipped
with 24 hour circulation pump). Check for low water level, suction flow restrictions (i.e. any leaves
or debris pulled against suc tion fittings in bottom of spa shell), closed valves, too many closed jets
and pump prime/air locked pump (see initial spa setup for instruction on relieving pump air lock).
On some systems, even when the spa is shut down by an error condition, some equipment may
occasionally turn on to continue monitoring the temperature or if freeze protection is needed.
* This message can be reset from the topside panel with any button press.
DO NOT DIVE. 55
DO NOT DIVE. 107