Clear findings before repair · Appointment-based service · Approval before work · License A51423 · EPA-certified technicians · Insured up to $1M
Residential Service Visit$99
The diagnostic fee is non-refundable and credited toward the total repair cost when you proceed.
Commercial service visits are priced separately at $150.
Exact model firstModel number and installation photos
Installation awareFreestanding, counter-depth and built-in fits
Diagnosis before partsSymptoms do not prove a component failure
Approval before workReview the recommendation first
Bosch dryers
Ventless by conviction - condensation, heat pump, no duct.
Bosch's US dryers are 24-inch ventless machines: the 300 Series condensation dryers and the 800 Series self-cleaning heat-pump models. No duct means the machine's health lives in its filters, condenser and condensate path - and Bosch documents the codes that watch them: E01 and E02 for the lint filter, E03 for the drainage hose, E12 for overheating.
A photo of the model label and the complete installation helps the team understand the configuration before the visit.
Core
300 Series condensation
The WTG-family 4.0 cu ft ventless condensation dryers - the classic Bosch compact.
Flagship
800 Series heat pump
WQB-family heat-pump dryers with self-cleaning condensers and Home Connect.
Install
Stack or side-by-side
Factory stacking kits pair them over the matching washers - no vent, closet-friendly.
Legacy
Earlier compact dryers
Older Bosch 24-inch machines still running across San Diego - serviced by E-Nr.
Start with the symptom
Common Bosch dryer problems
A symptom narrows the inspection; it does not identify the failed component. The $99 visit confirms the actual fault on the exact model before any repair is authorized.
Cycles
Clothes damp after a full cycle
Filters, condenser and moisture sensing - the ventless trio, in order.
Water
Water on the floor
Condensate path - container, pump and hose - before any component is blamed.
Cycles
Cycles running long
Low-temperature drying is slower by design; sudden change means airflow or sensing.
Drying
Dryer stops early
Moisture sensor readings versus reality - testable directly.
Safety
Musty smell
Standing condensate - the path gets cleaned, not perfumed.
Symptom
Stack wobbling
Factory stacking kit and leveling - checked on every stacked install.
Series and model numbers
Bosch dryer series we service
Condensation WTG or heat-pump WQB - the prefix decides the service path, and the E-Nr inside the door decides the parts.
Condensation
WTG prefix
Model numbers
WTG86400UC
What to note
Condensation platform - lint filter, condenser and condensate pump are the service heart.
Heat pump
WQB prefix
Model numbers
WQB245AXUC
What to note
Self-cleaning heat-pump platform - refrigeration-style circuit at low, safe temperatures.
Identity
E-Nr + FD
Model numbers
Inside the door frame
What to note
Parts and service data order by E-Nr and FD date code together.
Model label
Where to find your Bosch model number
The rating plate with E-Nr, FD date code and serial is inside the door opening, on the frame - open the door and photograph the whole plate. Photograph the complete label — the full model and serial identify parts and production year better than the series name alone.
Indicators and alerts
Bosch dryer alerts & indicators
For any message not shown, use the manual for the exact model rather than a generic list.
Message / alert
E01 or E02 on the display
What it means
The official meaning: the lint filter is blocked and needs cleaning - airflow is the lifeblood of a ventless dryer.
Safe check
Clean the filter per the manual, dry it fully, reinsert. Codes that survive a clean filter merit the visit.
Bosch diagnostics
Bosch dryer error codes, decoded.
All codes above carry official meanings on Bosch's US dryer support pages, which also list the electronic-fault group verbatim. Third-party decodes that contradict the official table are excluded.
Error code · E01 / E02
Lint filter blocked
What it commonly means
Officially: the lint filter needs cleaning - restricted airflow through the filter stage.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
Filter and airflow path are cleaned and verified; chronic recurrence with clean filters moves to airflow sensing.
Error code · E03
Condensate drainage blocked
What it commonly means
The condensation drainage hose is blocked or kinked - water has nowhere to go.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
The condensate path - container, pump, hose - is cleared and tested through a full cycle.
Error code · E04
Overload
What it commonly means
Officially: typically caused by overloading the drum.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
Load guidance first; genuine E04 with sane loads moves to drive and sensing checks.
Error code · E12
Overheating / restricted airflow
What it commonly means
The dryer is running hot - airflow restriction inside the machine.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
The internal air path and condenser are cleaned, the fan tested, and temperatures verified.
Error code · E63
Heating element failure
What it commonly means
The heating stage failed - documented as a component fault.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
The heater circuit is measured and the failed component replaced with the E-Nr-exact part.
Error code · E09 / E06 / E24 and kin
Electronic faults
What it commonly means
Bosch's official table groups these as electronic faults requiring an authorized technician.
Safe owner step
Photograph the code and the model label, and press reset once. A single power interruption at the breaker is reasonable if safely accessible - do not repeat it.
What repair typically involves
Read in service mode against Bosch data for the exact model - the official 'call service' honored with instruments.
Any other code or behavior
Meanings vary by series and year
Why we do not guess
Bosch products span several control generations; the same characters can mean different things on different series. The complete model number fixes the definition.
What to capture
Photograph the full display and the model label, and note what the appliance is doing.
Next step
The $99 diagnostic visit confirms the actual fault before any repair is authorized. Book a visit or call (619) 877-6701.
Preventive service and owner care
Bosch dryer maintenance
Alpha Pro provides preventive and general maintenance for Bosch dryers. The appliance design determines which procedures are accessible and appropriate.
Owner maintenance
Routine care between visits
Lint screen: clean before every load; wash off softener film monthly.
Vent duct: keep the exterior vent flap free and the duct path short and unkinked; book duct cleaning when drying slows.
Heat-pump filters: on heat-pump models, clean the secondary filters per the manual.
Loading: avoid overloading - it extends cycles and stresses bearings and belts.
Professional maintenance
Inspection follows the appliance design
A professional visit can evaluate accessible systems without assuming every procedure applies to every model.
Airflow and vent restriction
Heating performance - element, igniter, or heat pump
Moisture sensing and cycle control
Drum rollers, belt, and bearings
Motor and blower condition
Thermostats and thermal safety
Control response and displayed faults
Installation and duct routing
Diagnosis before parts
A straightforward three-step service process
1
Describe the symptom
Call or book with the model label, exact behavior, any displayed codes, photos, and access notes.
2
Evaluate the system
The technician examines the reported condition in context: airflow, heat, cycle behavior, drum condition, controls, and relevant components.
3
Review the recommendation
Findings and proposed work are explained before repair proceeds. The residential diagnostic is credited toward an approved repair.
Service areas and operating context
Bosch dryers across San Diego
Alpha Pro serves Bosch dryers in communities including La Jolla, Del Mar, Rancho Santa Fe, Carmel Valley, Poway, and the full San Diego County footprint below — ZIP by ZIP. Installation and room conditions vary from the coast to inland homes.
Coastal homes
Moisture, ventilation, and accessible surfaces
Recurring condensation, marine exposure, ventilation limits, and visible corrosion can be useful details during repair or maintenance.
Inland homes
Ambient heat and equipment environment
Share room conditions, recent heat events, ventilation restrictions, and when the symptom appears.
During maintenance, accessible metal surfaces can be inspected for corrosion, moisture exposure, or conditions that may warrant attention. Location alone does not establish the cause of a failure.
There is no honest universal age or price threshold. Start with the exact model and a diagnosis.
01Age and exact model
02Condition and installation
03Repair scope
04Parts availability
05Replacement and cabinetry context
Helpful answers
Bosch dryer service questions
Clear preparation makes a service request easier to evaluate.
Do you offer same-day Bosch dryer repair in San Diego?
Yes - same-day windows are offered across San Diego County subject to the day's schedule. Availability is confirmed for the exact address when you book.
Does the $99 residential diagnostic fee always apply?
Yes. It is non-refundable and credited toward the total repair cost if you proceed. There are no residential exceptions.
What warranty comes with a repair?
A 90-day labor warranty and a 1-year parts warranty, both starting on the date the repair is completed.
Can a symptom alone identify the failed part on a Bosch dryer?
No. A symptom narrows the search, but the diagnostic visit on the exact model confirms the actual fault before any repair is authorized.
Does a Bosch dryer need a vent?
No - both the condensation and heat-pump platforms are ventless. The health of the machine lives in its filters, condenser and condensate path instead of a duct.
What does E01 mean?
Officially: the lint filter is blocked. Clean it, dry it, reinsert it - and if the code returns with a clean filter, airflow sensing needs the visit.
Why is my heat-pump dryer slower than my old vented one?
Low-temperature drying is gentler and inherently slower - that is design, not fault. A sudden slowdown is the real signal, and it is usually airflow.
Where is the model number?
Inside the door opening on the frame - photograph the E-Nr and FD date code together; Bosch parts require both.
Do you service stacked Bosch pairs?
Yes - stacking hardware, leveling and both machines in one visit when needed.
Repair and preventive care
Choose the right Bosch dryer visit.
Schedule help for an active problem or arrange preventive maintenance for the appliance.
