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OWNER’S MANUAL
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ANALYZER CODES
FAILURE LOCK-OUT: This feature is for the protection of the heater. If the same failure occurs three (3) times
within an hour, the control will not allow the unit to restart, and shall display the appropriate code (i.e. “LP3”,
“HP3”).The reset to normal conditions can be accomplished by pressing any button on the control touch pad
one time.
“FLO”
(Little or No Water Flow)
• The pump is not running.
• The filter is dirty or clogged.
• Shortage of water to pump - air leak.
• Undersized pump.
• Valves not in correct position.
• Filter in backwash mode.
• Water pressure switch needs adjustment, or is defective.
“HPS”
(Compressor High Pressure)
• Low water flow to heater.
• Defective high-pressure switch.
“LPS” (Compressor Low Pressure)
• Qualified personnel should perform installation, maintenance and service.
• Make sure all field wiring conforms to the heater specifications and all national and local codes.
• Disconnect all power sources before performing any maintenance or service to the heater.
“ESO”
• Evaporator temperature sensor connection opened. Check for cut or loose sensor wiring or defective sensor.
“tSO”
• Water temperature sensor connection opened. Check for cut or loose sensor wiring or defective sensor.
“ESS”
•
Evaporator temperature sensor connection shorted. Check for a short in sensor wiring or defective sensor.
“tSS”
•
Water temperature sensor connection shorted. Check for a short in sensor wiring or defective sensor.
“DEF”
• Heat pump in defrost cycle.
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