Repair
Repair Primary Heater
Replace Heater Element
1. Press to stop the pumps.
2. Turn off heat zones.
3. Flush pump.
4. Press
to park the pumps in the down position.
The park operation is complete when green dot
goes out. Verify the park operation is complete
before mov ing to next step.
5. Press to deactivate the system.
6. Turn main power switch off.
7. Relieve pressure. See
Pressure Relief Procedure, page 43.
8. Wait for heater to cool.
9. Remove four bolt s (23 ) and sh roud (10).
10. Remove sc rew (20) and lower din rail cover (48).
11. Disconnect heater wires:
a. A Side: Disconnect A side heater wires,
transformer, and transformer fan wires from
lower din rail (33).
b. B Side: Disconnect B side heater wires and
remov e lower din rail (33) from B side heater
(5).
12. Test heater wires with ohmmeter.
Syst
em Total
Heater
Wattage
Element
Ohms
E-30 (10
kw)
10,200 2,550 18–21 per
element
E-XP2,
E-30 (15
kw)
15,300 2,550 18–21 per
element
NOTICE
To preven t a short circuit or low e ring the
transformer life, do not splash fluid on
transform er. Cover transformer with a plastic
sheet or piece of cardboard.
60 333024F
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