Tiffin Motorhomes PowerGlide 2019, Owner'S Manual

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C U M M I N S E N G I N E S
4-10
An illuminated DPF lamp indicates that the DPF needs to be regenerated at the next possible
opportunity. This can be accomplished by:
1. Changing to a more challenging duty cycle, such as highway driving, for at least 20 minutes.
2. Have a Cummins authorized repair location perform a stationary regeneration.
NOTE: Stationary regeneration is considered a normal maintenance practice and is not covered by
Cummins Inc. warranty.
A flashing DPF lamp indicates that the DPF needs to be regenerated at the next possible opportunity.
Engine power may be reduced automatically.
When the DPF lamp is flashing, the operator should:
1. Change to a more challenging duty cycle, such as highway driving, for at least 20 minutes.
2. Have a Cummins authorized repair location perform a stationary regeneration.
A flashing DPF lamp combined with an illuminated CHECK ENGINE lamp indicates that the DPF
needs be regenerated immediately. Engine power will be reduced automatically. When these lamps are
illuminated together you should
immediately seek service from a Cummins authorized repair location.
NOTE: If the engine is unable to complete a DPF regeneration cycle, the STOP ENGINE lamp will
illuminate and the vehicle will have to be towed to a Cummins authorized repair location.
High Exhaust Temperature (HEST) Lamp
The HEST lamp is amber, and looks similar to this:
The HEST lamp indicates, when illuminated, that exhaust temperatures are high due to regeneration of
the DPF. The lamp could illuminate during normal engine operation or during stationary regeneration.
NOTE: The OEM determines whether or not the HEST lamp is installed on the vehicle. The OEM also
specifies the temperatures, vehicle speeds, and other conditions at which the lamp illuminates. Refer to
the OEM service manual for additional information regarding this lamp.
When this lamp is illuminated, make sure the exhaust pipe outlet is not directed at any surface or material
that will melt, burn, or explode.
o
Keep the exhaust outlet away from people, and anything that can burn, melt, or explode.
o
Nothing within 0.6 m [2ft] of the exhaust outlet
o Nothing that can burn, melt, or explode within 1.5 m [5ft] (such as gasoline, wood, paper, plastics,
fabric, compressed gas containers, or hydraulic lines).
o
In an emergency, turn off the engine to stop the flow of exhaust.