ad8370p4003a

Heater booster (ZUH) diagnosis, troubleshooting

Typ ad · téma 83.70 · verze 0102 · 2003-06-13

Platí pro: MODEL 168 with ENGINE 668.940 with heater booster MODEL 202 with ENGINE 611.960 with heater booster MODEL 210 as of 1.9.96 with ENGINE 602.982 with heater booster MODEL 210 with ENGINE 611.961 with heater booster

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 3 Nástavba › 83 Klimatizace › 83.70 Nezávislé topení, přídavné topení, přihřívač — Řada 168 · Řada 202 · Řada 210 · Řada 602 (modely 982) · Řada 611 (modely 960, 961) · Řada 668 (modely 940)

AD83.70-P-4003A

Heater booster (ZUH) diagnosis, troubleshooting

12.8.97

MODEL 168 with ENGINE 668.940
with heater booster

MODEL 202 with ENGINE 611.960
with heater booster

MODEL 210 as of 1.9.96 with ENGINE 602.982
with heater booster

MODEL 210 with ENGINE 611.961
with heater booster

Danger!

Risk of explosion due to fuel vapors, risk of poisoning from inhaling combustion gases and risk of injury from burns during or after heater operation.

Do not put stationary heater/auxiliary heater or engine with heater booster into operation in confined spaces or while refuelling. Allow heater unit to cool down after operation and wear safety gloves.

AS83.70-Z-0002-01A

Heater booster (ZUH), diagnosis, advanced information

AD83.70-P-2002A

Connect Hand-Held Tester (HHT) and read out fault memory

Models 202, 210

Model 168

AD00.00-P-2000-03A

AD00.00-P-2000-03C

Fault memory

Fault code

Possible cause

Note

Remedy

No fault code

No fault recognized

If there is a complaint nevertheless:

Heater booster (ZUH) diagnosis, troubleshooting

AD83.70-P-5002A

Stationary heater/heater booster control module (A6n1) defective

Replace stationary heater/heater booster unit (A6)

Stationary heater/heater booster control module (A6n1) not/incorrectly coded

Variant coding not in order

Check and carry out variant coding

No flame at start of heater boost operation and after automatic repeat start

See HHT

Flame goes out during heater boost operation without a new flame after automatic attempt at starting

Flame goes out more than four times during a heater boost cycle

See HHT

See HHT

Overvoltage

Undervoltage

Operating voltage has exceeded 15.5 V for longer than 6 seconds

Operating voltage has failed to reach

10.2 V for longer than 20 seconds

AD83.70-P-6002-01A

AD83.70-P-6002-01A

|— —|+

— / / —, |— —| –

Circuit of glow pin (A6r2), short-circuit to positive

Circuit of glow pin (A6r2), open-circuit or short-circuit to ground

Replace stationary heater/heater booster unit (A6)

Replace stationary heater/heater booster unit (A6)

Malfunction lock-out exists:

Thermal fuse in stationary heater/heater booster unit (A6) has blown because the coolant in the heater unit has exceeded the maximum permissible temperature of 125°C

or

3 different or the same faults have occurred in sequence

See HHT

|— —| –

— / / —, |— —|+

Circuit of stationary heater fuel metering pump (Y23), short-circuit to ground

Circuit of stationary heater fuel metering pump (Y23), open-circuit or short-circuit to positive

AD83.70-P-6001-06A

AD83.70-P-6001-07A

Overload, |— —|

— / / —

Combustion air blower (A6m2), overload or short-circuit

Combustion air blower (A6m2), open-circuit

See HHT

See HHT

Overload, |— —|

— / / —

Glow pin (A6r2), short-circuit to ground

Glow pin (A6r2), open-circuit or short-circuit to positive

See HHT

See HHT

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