(F2) The motor is not sensed to be rotating
Yes No
1 Is the rotor jammed? »2 »3
2 Free jammed rotor, check for damage to rotor and rotor housing. »A »A
3 Is the stator wiring from controller ok? Check stator windings for
correct resistances are they ok?
»5 »4
4 Repair wiring or replace stator as required. »A »A
5 Is the rotor position sensor clipped into the stator correctly and
plugged onto the controller with a good connection?
»6 »A
6 Substitute with a new rotor position sensor. »A »A
(F3) Water temperature sensed at greater than 85°C /
185° F
Yes No
1 Is incoming water greater than 85°C / 185°F? »2 »3
2 Adjust incoming water temperature. »A »A
3 Is the element on all the time? »4 »5
4 Replace the electronic controller. »A »A
5 Are the wiring & connections from the controller to the element all
ok?
»6 »A
6 Are there any signs of moisture around the temperature sensor? »8 »7
7 Is the resistance of the temperature sensor ok? (see specs at
front of manual)
»10 »9
8 Locate & repair source of leak. »A »A
9 Replace element »A »A
10 Run through test cycles to try & induce fault again »A »A
(F4) No temperature increase has been sensed while the
element is on
Yes No
1 Does the element heat in diagnostics? »7 »2
2 Test the resistance of the element at the plug on the controller, is
it ok?
»3 »5
3 Is the plug making a good connection onto the controller? »4 »A
4 Replace the controller. »A »A
5 Is the wiring and the edge connections down on the element ok? »6 »A
6 Test the resistance of the element and replace if necessary. »A »A
7 Is the resistance of the temperature sensor measuring from the
plug on the controller ok? (see specs at front of manual)
»8 »9
8 Replace controller. »A »A
9 Is the wiring and the edge connections down to the temperature
sensor ok?
»10 »A
10 Replace the element. »A »A
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