Zodiac Jandy EE-Ti Specifications download pdf (Page 26)

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Diagnostic Condition Description

LOW H

O FLOW Low or restricted water flow through the heat pump.

The external bypass valve is in the wrong position, or the water

flow switch has malfunctioned. The water flow switch opens creating

a fault and the heat pump shuts off.

The LCD screen will display LOW H

O FLOW on the top line until

the switch closes. The ON LED will flash once every 2 seconds.

LOW COIL TEMPERATURE When the evaporator coil temperature is below 30°F, the heat pump

cannot operate effectively.

The coil thermistor reads the temperature and the control goes into

defrost if the defrost mode is not set to OFF in setup mode.

The LCD display will display LOW COIL TEMP on the top line for

the duration of the low coil temperature condition when the defrost

mode is set to OFF. When set to either Air Defrost or Reversing

Valve Defrost, the LCD display will show * Defrost Mode * for the

duration of the low coil temperature condition.

LOW REFRIGERANT PRESSURE When the ambient temperature is low, the suction pressure can

drop significantly.

This fault will cause the low pressure switch to open and the control

will shut off the compressor.

The LCD display will display LOW REFRIGERANT on the top line

and PRESSURE on the bottom line for the duration of the fault

condition. The ON LED will flash twice every 2 seconds.

HIGH REFRIGERANT PRESSURE When the head pressure builds too high, the high pressure switch

will open causing the heat pump to shut off immediately.

The control will sense this fault condition and shut off the

compressor until the switch re-closes.

The LCD display will display HIGH REFRIGERANT on the top line

and PRESSURE on the bottom line for the duration of the fault

condition. The ON LED will flash 3 times every 2 seconds.

HIGH WATER TEMPERATURE When the POOL or SPA water temperature heats to the maximum

allowed temperature or above, there could be safety risks for

anyone in the water.

The water thermostat will read this temperature and the control will

shut off the heat pump unless it is in CHILLER mode.

The LCD display will display HIGH H

0 on the top line and

TEMPERATURE on the bottom line for the duration of the fault

condition. This feature also remains active when the control calls

for heat through a remote thermostat. This is to insure that water

temperature does not go to an abnormally high level due to a

possible malfunction of the remote sensor.

8.2 Diagnostics

In the event a pressure switch opens or another

fault condition occurs, the LCD screen will display

the fault until the problem has been resolved. Please

refer to the following table for the list of diagnostic

conditions.

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Zodiac Jandy EE-Ti Specifications Page 26

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