Raikkonen was third on Day 2 but completed only 43 laps after a gearbox problem sidelined him for the majority of the day.
"If yesterday wasn’t an ideal day then today was more of the same," he said.
"Fortunately, once we were able to get a lap in we could see that the car has good pace. We test to find any problems so in that respect we’re doing a good job, but it’s frustrating. It’s no secret that we want to get more laps on the board and that’s the target for the rest of this test and the final sessions next week."
"Our target was more laps today and we’ve missed that," added trackside operations director Alan Permane.
"We were able to diagnose a problem with the gearbox, but rectifying this took quite a lot of time. This severely affected our plans for the day but yet again we were able to show we have a quick car. On the positive side, there were no further problems with telemetry as we experienced yesterday and the second gearbox ran reliably in the afternoon. Tomorrow we will try to rack up the laps with evaluation work and a race distance simulation."
Romain Grosjean takes over the wheel of the Lotus E21 for the remainder of the test.