Installation guide

FAULT FINDING SECTION 7

Make sure that water heater is plugged in.

When the switch is on, is there 230V between L1 and N on the terminal block? If not, then

check for loose wire connections on the “Power Switch Wire Harness.” If connections are

ok, then replace the switch.

If there is voltage between L1 and N then the light on the switch is burnt out. Replace

switch.

MAIN POWER LIGHT

IS NOT LIT

Check for 230 VAC at the ignition module on “230 VAC IN.” If there is voltage, then check

the secondary (24 volt terminals) voltage across the transformer as previously described.

If no voltage from the secondary plug from the transformer, replace the transformer or wire

harness. If the control has 230 and 24 volt input, replace the control.

IGNITION MODULE

“POWER” LED IS

NOT LIT

Make sure that the temperature of the tank is cool.

If the thermostat does not call for heat, then check the PRIMARY voltage across the

“Transformer”. If there is voltage across the PRIMARY, then check the voltage across the

SECONDARY leads of the “Transformer”.

Install a jumper wire from N.O. terminal to the COM terminal on the “Thermostat PC

Board.” If the thermostat calls for heat after installing a jumper wire then replace the

“Thermostat Sensor Probe”.

If the ‘Sensor Probe’ is replaced and the unit does still not operate then check

“Potentiometer” for the proper resistance. If the readings are correct, then replace the

“Thermostat PC Board”; otherwise replace the “Potentiometer.”

THERMOSTAT

DOES NOT CALL

FOR HEAT

Check for voltage to the blower leads. If 230 volts is present, replace the blower. If no

voltage present, check the blower relay, thermostat/high limit switch, and collector unit

switch. If the limit switch trips, call our technical support department.

BLOWER

DOES NOT

ENERGIZE

Is there voltage to the “Hot Surface Ignitor”? Check for 230VAC to the ignitor from the

ignition module when the ignition LED is lit. If no voltage to the ignitor, replace ignition

control or the ignitor relay.

Check the resistance value across the “Hot Surface Ignitor?” If over 2000 ohms,

then replace hot surface ignitor.

IGNITOR DOES NOT

GLOW