Coates PHS SERIES 54 & 480V THREE PHASE - Manual (Page 5)

4.0 CONTROL PANEL
A. INDICATOR
LIGHTS
The control has three indicator lights and a lighted ON-
OFF rocker switch. The lights are as follows:
STATUS LIGHTS
LIGHT DESCRIPTION ( when Illuminated )
ON-OFF Heater has power to control circuit.
RESET High Temperature limit is OK.
FLOW Sufficient water flow through heater.
ELEMENT Heating elements are powered.
B. DIGITAL
THERMOSTAT CONTROL
For heaters equipped with a digital thermostat. The
digital thermostat control which measures the
temperature of the water as it enters the heater has a
MENU button, up and down adjustment buttons, and
an LED display. The desired water temperature (set
point) is controllable between 40°F and 104°F (5°C
and 40°C). The set point may differ from the actual
water temperature at the pool or spa due to heat loss
in the piping.
MENU:
The MENU button cycles through the three menu
items: Measured Water Temperature (default), SET
POINT and °F/°C.
ADJUSTING THE SET POINT:
Press one of the following buttons; MENU,
or .
The display will momentarily blank and then the
current set point will be displayed. Press the
or
button to change the set point. Hold the button down
for rapid temperature changes.
The set point will be saved and the display will return
to the measured temperature after two seconds of
inactivity.
OPERATION:
In the measured temperature mode, the water
temperature in the heater is displayed. The LED
corresponding to the current temperature scale will be
illuminated. If the heater is calling for heat the
HEATING LED will be illuminated.
FAHRENHEIT TO CELCIUS:
Press the MENU button twice and the current
temperature scale will be displayed ( F or C ). Press the
or buttons to toggle between F and C.
The temperature scale will be saved and the display will
return to the measured temperature after two seconds of
inactivity.
ERROR CODE:
The display will read “Err” when it detects a problem with
the temperature sensor. This can be caused by a faulty
sensor or a loose connection between the sensor and
the temperature controller.
5.0 MAINTENANCE
Element Inspection and Replacement:
1. Turn off power at main disconnect switch and turn
off pump.
2. Drain pool heater.
3. Remove service access panel opposite inlet/outlet.
4. Disconnect element wires.
5. Remove the four (4) element flange retaining nuts
and extract element.
6. Installation is the reverse of steps 1 through 5.
(Reinstall element with new gasket)
When closing down the pool for any length of time, shut
off the power at the main disconnect switch and drain
the water from the system. Water must not be allowed
to freeze in the heater, as this will cause severe
damage.
Annual Cleaning:
Yearly, before winter, the pool heater should be drained
and cleaned to remove any scale or sludge. More
frequent cleaning may be required if pool water contains
sediment or any amount of foreign matter.
1. Turn off heater at main disconnect switch.
2. Open drain valve.
3. Permit water to run until it is clear.
4. Close valve and restart normally.
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