GUIDE · CALLEADESIGN LIBRARY
Wall Clock Troubleshooting Guide
If a wall clock stops, loses time or behaves unexpectedly, the cause is often simpler than it first appears. This troubleshooting guide is based on recurring cases handled by the CalleaDesign workshop over many years of working with quartz wall clocks.
Start with the simplest checks first. Many faults can be identified without replacing the movement.
1. The clock is new but seems not to be working
If the movement is very quiet and the clock has no second hand, it can be easy to think that nothing is happening.
Wait at least one full minute and observe the minute hand carefully before assuming that the movement has stopped.
2. Check the battery carefully
Use a fresh 1.5 V non-rechargeable battery of the type specified for the movement and make sure it is inserted fully and with the correct polarity.
Do not use standard rechargeable NiMH AA batteries when testing or operating the clock unless the specific movement explicitly allows them. Most NiMH rechargeables have a nominal voltage of 1.2 V, while a standard alkaline AA battery is rated at 1.5 V. Some quartz and radio-controlled clock movements are designed around a 1.5 V supply, so the lower voltage of a rechargeable cell can cause weak starting torque, irregular operation or unsuccessful radio synchronisation even when the battery is fully charged.
For troubleshooting, always test the clock first with a new 1.5 V alkaline battery. This removes battery voltage as a possible cause before checking the movement itself.
Also inspect the metal contacts inside the battery compartment. If there is light oxidation, clean the contacts carefully with a suitable electrical-contact cleaner or another gentle cleaning method. Avoid aggressive abrasion unless it is really necessary, as damaging the contact surface can make future corrosion more likely.
If there has been battery leakage or the contacts are badly damaged, the movement may need service or replacement.
3. Check whether the hands are parallel
During transport or cleaning, a hand can move slightly and begin to touch another hand or the dial. Even light contact can stop the clock or create irregular movement.
Set the time to 12:00 using the rear adjustment control, hold the clock vertically and look at the hands from the side. They should remain parallel and have enough clearance to move freely.
If a hand is visibly bent or out of position, correct it only with care. If you are unsure, contact support before forcing it.
4. The minute hand feels loose or drops out of position
If the minute hand is not firmly connected to the shaft and begins to move toward the hour hand, the small fixing cap or nut that holds it in place may have loosened.
Hold the minute hand steady and tighten the fixing carefully. If the fixing part has been lost, contact CalleaDesign assistance for a replacement.
5. The minute hand moves independently clockwise and anticlockwise
If the minute hand rotates freely without following the movement correctly, the shaped fixing hole may be damaged.
To check this, hold the minute hand still, remove the fixing cap and inspect the opening in the hand. It should retain the same shaped profile as the shaft it fits onto rather than becoming completely round.
If the fixing hole is damaged, the minute hand should be replaced.
6. One hand moves but the other remains still
If the minute hand moves but the hour hand remains stationary, especially on a large clock, the movement itself may still be working. The issue can be a lack of grip between the hour hand and its shaft.
On small and medium hands, the fit may sometimes be restored by carefully reseating the hour hand onto the shaft.
On very large hands, follow the model-specific instructions or contact CalleaDesign before dismantling the hand set, as the fixing system can vary by model.
7. The minute hand is still attached to a shaft that has detached from the movement
If the drive shaft itself has separated from the movement, the movement normally needs to be replaced with one having the correct dimensions and specifications.
8. The clock has become noisy
First check whether any of the hands are touching each other, the dial or another decorative element. Also replace the battery and make sure the movement is correctly installed.
For a deeper explanation, see Silent Wall Clocks: How Sweep Movements Work.
9. The clock stopped after you changed the time
If the hands were turned directly by hand, they may have become slightly bent or misaligned, or unnecessary stress may have been placed on the movement.
Use the rear adjustment wheel rather than moving the hands directly. See Why You Should Not Move Clock Hands Manually.
10. A radio-controlled clock does not synchronise
Check the battery first, then move the clock away from routers, televisions, computers and large metal objects. Allow enough time for another reception cycle.
Reception can vary significantly from one position to another. For more detail, see DCF77: How Radio-Controlled Clocks Work in Europe.
11. The clock did not change automatically for daylight saving time
A standard quartz clock needs to be adjusted manually from the rear setting control. A radio-controlled clock can update automatically only after successful synchronisation.
See Daylight Saving Time 2026 in Italy: When Clocks Change.
12. Check the wall installation
Make sure the clock is seated correctly on its fixing and is not under mechanical stress. If the model uses CalleaDesign Secure Lock, confirm that the screw is correctly engaged in the shaped slot.
See How to Hang a Wall Clock Safely: Fixings & Secure Lock.
When should the movement be replaced?
If the battery is fresh, the hands move freely, the fixing is correct and the clock still does not operate properly, the movement may need replacement.
CalleaDesign can help identify a compatible replacement movement or the correct service solution for the model.
A simple troubleshooting sequence
- Wait at least one minute and confirm that the minute hand is moving.
- Replace the battery and check polarity and contacts.
- Check that the hands are parallel and do not touch.
- Check that the minute-hand fixing is secure.
- Check whether either hand has lost grip on its shaft.
- For radio-controlled models, test reception in another position.
- Confirm that the clock is correctly installed on the wall.
- If the problem remains, contact CalleaDesign support with the model name and a short description of the fault.
Frequently asked questions
My clock is silent. How do I know if it is actually running?
If there is no second hand, wait at least one full minute and watch the minute hand closely. Silent sweep movements can be almost impossible to hear in normal use.
Can a weak battery make a clock lose time?
Yes. A weak or unstable battery can cause irregular behaviour, so replacing the battery is always one of the first checks.
Can I use a rechargeable AA battery?
We recommend using a fresh 1.5 V non-rechargeable battery unless the specific movement states otherwise. Standard NiMH rechargeable AA batteries are normally rated at 1.2 V, and that lower voltage can cause unreliable operation in movements designed for a 1.5 V supply.
What if the hands touch each other?
The clock can stop or behave irregularly. View the hands from the side and make sure there is enough clearance between them and the dial.
Should I move the hands by hand to fix the time?
Normally no. Use the setting control on the back of the movement unless the instructions for that specific model say otherwise.
What if none of these checks solves the problem?
Contact CalleaDesign support. In many cases the next step is simply identifying the correct replacement movement or hand set for the model.