  The high-frequency peaked BL Lac object 1ES 0229+200 (z = 0.14) was first
detected in very high energy (VHE, E > 100 GeV) $\gamma$-rays by the H.E.S.S.
(High Energy Stereoscopic System) collaboration in 2006. No flux variability
was reported in the initial study and its spectral characteristics have been
used to derive constraints on the extragalactic background light (EBL) and on
the intergalactic magnetic field (IGMF). 1ES 0229+200 has been observed with
H.E.S.S. for $\sim$130 hours from 2004 to 2013: the full dataset analysed with
a more sensitive method will be presented here. The results indicate that the
source is not constant and displays flux variability on yearly and monthly
timescales. The existence of flux variability affects the derivation of the
constraints on the IGMF. The H.E.S.S. observations cover several simultaneous
multi-frequency campaigns and the VHE variations are compared with those
reported in different bands.
