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Electric heater Maxi Heat Digital
Start up
1. Check all electrical and plumbing installations and switch on the fuses.
2. Open all valves except the drain valves and fill the system with water.
If the water level in the swimming pool is below the heater, fill the pool and, leaving the heater OFF, turn on the system pump
to fill the system. If a bypass is installed in the system, open the bypass valve half-way. Make the final adjustment later.
3. Start the pump.
4. Energize the heater.
Setting the temperature
1. Switch on the power to the heater.
2. Set the required pool temperature in °C by using the blue or red
arrow key. Red = temp up, blue = temp down.
3. After 5 seconds the display shifts from showing the required
temperature to show the actual pool temperature.
The indicator lights on the control panel of the heater now show
that the heating elements are operating.
When correct pool temperature is reached, the heating elements
shut off in intervals.
The heater remember the latest required temperature even if the power supply is switched off.
Water flow/bypass adjustment
The water flow rate can be adjusted by use of an external bypass valve and a thermometer. The bypass valve is adjusted
using the water temperature difference (rise) through the heater as indicated by the thermometer at the heater outlet.
1. Turn on the pump and allow it to run for 5 minutes, then read the water temperature on the thermometer.
2. Set the electronic thermostat to call for heat, run for 5 minutes and again read the temperature on the thermometer.
To prevent tampering and possible operational problems or damage to the heater, it is recommended that the bypass valve
handle is removed.
Maintenance
Note that the heater functions only when the circulation pump is running and the water is circulating. It will not heat when the
filter pump is off or the temperature control is not calling for heat.
In hard water areas, lime can accumulate in the tank and on the heating element. Tank and element should be inspected
periodically and scale removed when necessary.
If the water in the system stands still for a longer period, drain the heater. Always turn off the heater and disconnect the main
fuses before draining the heater. Close both the inlet valve and bypass valve and open the drain plugg on the heater.
The heater contains about 15 liters of water. If vacuum occurs, loosen the outlet connection a little to make sure of total draining
of the heater.
If the swimming pool system is subject to sub-zero temperatures, turn off the power to the heater and the pump and drain the
entire system. Open the drain plug, placed on the side of the heater. The system drain valve must be left open until it is time to
start up the swimming pool again.
When back-washing and cleaning the filter, the power to the heater must be turned off.
When technical problems occur
The display shows an error code. Contact your installer.
Error codes
Code Cause
E1
Flow switch
E2
Pool water temperature sensor
not connected/short circuit
E6
Overheating limit control shut off
E7
Connector circuit broken
E10
Circulation pump not active
E11
One of the heating elements isn't working
Hi
Water temperature higher than +45°C
Pahlén AB, Box 728, SE-194 27 Upplands Väsby, Sweden
Tel. +46 8 594 110 50, Fax +46 8 590 868 80, e-mail: info@pahlen.se, www.pahlen.com
Measure
Control/increase water flow
Check connection. Replace sensor if it is out of order.
Warning! The unit is live up to the first contactor even if the overheating limit control
has been released. Reset manually to restore heater operation by pressing the red
knob under the red protective hub. If the overheating limit control continues to shut off
the heater, have a qualified service technician determine the cause of the malfunction.
Check cables, circuit board and contactors.
Turn on circulation pump.
On the control panel the twinkling diode shows wich of the heating element 1 to 4 is
not working. (The heating elements that works will be started and those diodes will
shine with a fixed light.) Check connections. Replace the defect heating element.
Pool water must cool.
.
Installation instruction
MA45-17E
2015
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