The banks are most often slow to answer on repair requests.
Since the Buyer has put in a RR(Repair Request) that should take care of any 'passive' agreement clauses (as in no action from the Buyer) in the banks addendum but I would include an ETA (Extension of Time Addendum) just to be on the safe side.
In CA the Seller doesn't even have to acknowledge the RR but since they want to sell they probably will. What were the items that your client requested repaired, how good is their offer and were there multiple offers when theirs was accepted? The answers will effect the banks response.
Some things to think about:
How long does your Buyer have to wait? I had one RR take over a month for a response and that isn't unusual.
How important are the repairs to your Buyer? Would they still purchase the home if the bank said 'No'?
And most importantly, are the items requested 'Lender Required Repairs'? Most of the selling banks will only do the 'Lender Required Repairs' and many of the lending banks are starting to ask for a copy of the Home Inspection so that may help you out.
Best of luck,
The only thing that may get their attention is if the request for repair/replacement is due to a safety and hazard issue identified by the inspections you've hired professionals to do.
And....if this is an REO, they do respond a little slower although when it's their turn to ask, they expect you to jump through the hoops, and if you miss deadlines, they charge per diem fees :(
Make sure your agent is in constant contact with the REO agent who has a direct line to the bank's asset manager. You don't want to take anything for granted.
I would wait for a response. As long as you have active contingencies they have to be removed in writing then you should wait past the 10 days at wait until the seller responds to your request for repair.
The Carrabba Group
Keller Williams Hollywood Hills