Proheat M80 Manuel de service télécharger pdf (Page 34)

CAUTION

Always ensure that the PROHEAT is allowed to Cool Down (Purge) for a full 3

minutes.

If the power is shut off without a proper Cool Down (Purge) during

Full Output, DAMAGE TO THE HEATER MAY OCCUR.

4. Ignition

The Motor and Coolant Pump start first, followed by the ignition spark, and then

Fuel Solenoid Valve opens. The Ignition Module sparks for up to 30 seconds

during which time the flame sensor must detect a correct flame.

• If the PROHEAT detects proper flame at any time during the 30 second

gnition cycle, the PROHEAT enters Full Output.

• If the PROHEAT does not detect proper flame during the 30 second ignition

cycle, the PROHEAT enters Cool Down (Purge). The PROHEAT will attempt

to start again moving into Pre-check after Cool Down (Purge). If the

second start cycle fails, the PROHEAT will enter Fault Shut Down.

The PROHEAT will continue in Full Output until the coolant temperature reaches

185°F (85°C) at the PROHEAT'S Dual Mode Temperature Sensor. The PROHEAT

closes the Fuel Solenoid Valve and goes into Cool Down (Purge).

The Motor and Coolant Pump continue to operate for three minutes. After

three minutes, the Motor and Coolant Pump stop and the PROHEAT enters

Supplemental Standby (coolant pump off). The PROHEAT will Cool Down (Purge)

for three reasons:

• Coolant reaches 185°F (85°C).

• A fault is detected. Go to Section 4.0 Troubleshooting and Repair, page 4-1.

• The PROHEAT is operating in Ignition or Full Output when it is switched off.

The Coolant Pump is “OFF” but the G-II PCM continuously monitors the coolant

temperature. If the coolant temperature drops below 160°F (71°C), the G-II

PCM will enter the cycle starting at Pre-run. The PROHEAT will continue to

repeat Steps 2 to 6 until it is switched “OFF.”

If the coolant pump is requested on via the coolant pump input (analog or CAN)

the PROHEAT enters Standby (coolant pump on). If the coolant temperature

drops below 160°F (71°C) the PROHEAT will move directly to Pre-check (step 3).

If the coolant pump is no longer requested on via the coolant pump input

(analog or CAN) the PROHEAT enters Supplemental Standby (coolant pump off).

After a 5 second delay the ON/OFF switch lamp, timer lamp or OEM indicator

(installation options) will turn off. In addition, the G-II PCM Indicator Light will

turn OFF

If the PROHEAT is in Full Output, it will Cool Down (Purge) first and then shut “OFF”.

If the PROHEAT is in

Standby, it will shut “OFF” immediately.

If the PROHEAT diagnostics sense a system or component fault, the PROHEAT will

shut down all components and flash diagnostic code(s) which best represent the

conditions. The flash codes will be shown on the G-II PCM Indicator diagnostic

in RED. In addition, the ON/OFF switch lamp, timer lamp or OEM indicator

(installation options) will also flash the same code(s). To reset the PROHEAT,

it must be switched off and then on again.

NOTE:

Damage may occur it the diagnostic codes are ignored and the PROHEAT

is repeatedly switched off and on without addressing the problem.

7. Supplemental

Standby

(Coolant pump off)

7A. Standby

(Coolant pump on)

8. Supplemental

Mode Signal

Removed

(Engine off)

9. Fault Shut

Down

5. Full Output

6. Cool Down

(Purge)

OFF

RED

2-9

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 89 90

Commentaires sur ces manuels

Pas de commentaire

Proheat M80 Manuel de service Page 34

Commentaires sur ces manuels

Produits connexes et manuels pour Chauffages d'appoint Proheat M80