Pentair 75 User Manual download pdf (Page 8)

P/N 471105 Rev. E 5-16-01

Failure to Light- Lockout

1. Should the main burner fail to light, or flame is not

detected during the trial-for-ignition (TFI) period

the control will go into lockout and the valve will

be turned off immediately.

2. Recovery from lockout requires a manual reset by

resetting the thermostat or turning off the ON/OFF

switch for a minimum period of 5 seconds.

IMPORTANT!

IT IS RECOMMENDED THAT NO MORE THAN

TWO IGNITION ATTEMPTS IN SUCCESSION

BE PERFORMED FOR NATURAL GAS

SYSTEMS . BEFORE FURTHER IGNITION

ATTEMPTS WAIT AT LEAST FIVE MINUTES

FOR GAS TO CLEAR.

FOR PROPANE (LPG) SYSTEMS ALLOW AT

LEAST FIVE (5) MINUTES BETWEEN IGNITION

ATTEMPTS FOR THIS HEAVIER-THAN-AIR

GAS TO SAFELY DISSIPATE. AFTER TWO

UNSUCCESSFUL IGNITION ATTEMPTS WITH

PROPANE OPEN THE BURNER ACCESS

DOOR AND WAIT AT LEAST THIRTY (30)

MINUTES BEFORE REPLACING DOOR TO

ATTEMPT FURTHER IGNITION ATTEMPTS.

NOTE

Normally the heater will light in the first or

second attempt. And with the exception of

a new installation or one that has been

shut down for an extended period, where

there is considerable air trapped in the gas

supply line, unsuccessful ignition

indicates other problems with the ignition

system - such as an unclean ignition

electrode impeding flame sensing.

3. If the thermostat is still calling for heat one hour

after a lockout the control will automatically reset

and attempt to ignite the burner again.

Flame Failure-Re-Ignition

1. If the established flame signal is lost while the

burner is operating, the control will respond within

0.8 seconds. The H.V. spark will be energized for a

trial for ignition period in an attempt to relight the

burner.

a. If the burner does not light the control will

de-energize the gas valve, shutting off the gas

flow, and the control will go into lockout as

described above in “Failure to Light-Lockout”.

If flame is re-established, normal operation

resumes.

Operation - Heater (contd.)

Control Fault -Diagnostic LED Conditions

Error Mode LED Indication

Internal Control Failure Steady on

Flame Sense Fault 2 flashes

Ignition Lockout 3 flashes

The DSI Ignition Control can be accessed after removing

the heater’s front control panel. The diagnostic LED

located on the top of the DSI control will flash on for 1/4

second, then off for 1/4 second during a fault condition.

The pause between fault codes is 3 seconds.

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 23 24

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Pentair 75 User Manual Page 8

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