  We present the results of our detailed light curve analysis of the ZZ Ceti
star HS 1625+1231. We collected photometric time series data at Konkoly
Observatory on 14 nights, and performed Fourier analysis of these data sets. We
detected 11 significant frequencies, where six of them are found to be
independent pulsation modes in the 514 - 881 s period range. By utilising these
frequencies, we performed preliminary asteroseismic investigations to give
constraints on the main physical parameters, and to derive seismic distances
for the star. Finally, we compared the astrometric distance provided by the
Gaia EDR3 data with those seismic distances. Our selected model, considering
both the spectroscopic measurements and the distance value provided by Gaia,
has $T_{eff}$ = 11 000 K and $M_*$ = 0.60 $M_{\odot}$.
