Specifications

Stellar Service Instructions REV: D

Date of Issue: 14/09/2007

This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.

FAULT FINDING – TESTS 1-4

TEST 1 TEST 2

Using a multimeter set on the x1 resistance scale,

measure across the terminals of the interrupter block on

the gas control. The reading should be 0 ohms (dead

short).

Disconnect the thermocouple from the gas control and

using a multimeter set on the DC millivolt scale measure

the voltage being generated by the thermocouple.

Normal voltage should be approximately 20 millivolts.

Note: It will be necessary to light the pilot and manually

hold the gas control knob down during this test.

TEST 3 TEST 4

With the thermocouple connected to the gas control and

using a multimeter set on the DC millivolt scale,

measure the voltage between the lower terminal of the

interrupter block and the thermocouple sheath. The

reading should be approximately 14 millivolts.

Using a multimeter set on the x1 resistance scale,

measure the resistance between the wiring terminal and

the electrode tip (ensure the tip is clean). Resistance

should be 0 ohms (dead short).